Are you in Aleppo? Are you affected by the conflict? If it is safe for you to do so, WhatsApp us on +44 7435 939 154 to share your photos, experiences and video. Please tag #CNNiReport in your message.

(CNN) The evacuation of the Syrian city of Aleppo could be coming to a close soon, multiple officials and a rebel group said, although they disagreed on the time frame and the number of evacuees.

A group of buses scheduled to evacuate the last civilians and rebels from eastern Aleppo has been delayed, Syrian state-run media said, blaming infighting among rebel factions.

Turkish Foreign Minister Mevlut Cavusoglu tweeted Tuesday that 37,500 people had been evacuated from the war-torn city so far, adding that "all evacuations are intended to be finished by tomorrow."

37500 people have been evacuated from #Aleppo so far. The goal is to complete all evacuations until tomorrow.

Both the Syrian regime and a key rebel group had said earlier they expected the evacuations to be completed Tuesday.

The regime is on the verge of retaking Aleppo from rebel groups who have controlled parts of the city since 2012. The government has made significant territorial gains after its forces, backed by airstrikes, entered rebel-held areas in late November.

Russian Foreign Minister Sergey Lavrov said the evacuation would conclude in the coming days.

However, the International Committee of the Red Cross has put the number of evacuees since Thursday at 25,000 and said the operation is "still ongoing."

A further 750 people have so far been evacuated from the largely Shiite villages of Fuaa and Kafraya in Syria's mainly rebel-held Idlib province as part of the same deal, the ICRC said.

3. @SYRedCrescent volunteers & our team will continue throughout the day, & however long it takes, to evacuate thousands more still waiting. — ICRC Syria (@ICRC_sy) December 19, 2016

It is unclear how many civilians and rebels are trapped in eastern Aleppo. But Syrian state-run Ekhbariya TV reported the Syrian army has used loudspeakers to urge remaining rebels to leave the area, warning it intends to enter the enclave in the coming hours to "remove remnants of terrorism."

Ekhbariya TV also reported that 51 buses had entered the city Tuesday to transport a number of rebels and their families to Idlib province.

Regime on verge of retaking Aleppo

Osama Abo Zaid, a spokesman for the Free Syrian Army, a rebel alliance backed by Turkey, said he expected the evacuation to conclude Tuesday, with a convoy of about 100 buses due to leave the city in addition to at least 300 private cars.

"A few civilians are afraid to leave Aleppo and stay in tents in the cold and decided to stay in their houses," Zaid said. He said some stealing and intimidation was taking place during the evacuation.

He added, "The forced evacuation in Aleppo will end today, and still there will be around 1,300 people to be evacuated from Kafraya and Fuaa simultaneous with evacuating 1,500 people from Madaya and Zabadani, per the agreement, as 2,700 people have been evacuated from Kafraya and Fuaa so far."

Turkey and Russia helped broker the ceasefire deal that made the recent evacuations possible. On Tuesday, Cavusoglu, the Turkish foreign minister, met with Russia's Lavrov and Iranian Foreign Minister Mohammad Javad Zarif in Moscow to discuss the Syrian conflict.

The joint efforts have been successful in facilitating the evacuation of civilians from Aleppo and the departure of militants, Zarif said Tuesday.

"We, you and Turkey have been able in the past five days to help evacuate innocent civilians from Aleppo as well as (facilitate) the terrorist groups to leave the city," Zarif told Lavrov ahead of the trilateral talks.

The three countries' defense ministers met in the Russian capital as well, announcing the Moscow Declaration, which the Russian Defense Ministry called an "extremely important document" that will "promote the settlement of the Syrian crisis."

"We will be able to act as the guarantors of further settlement and implementation of the Syria ceasefire agreement," Russian Defense Minister Sergey Shoigu said during the meeting with his Iranian counterpart.

The meetings came on the heels of Monday night's assassination of Russian ambassador Andrey Karlov in the Turkish capital of Ankara.

Russia: No military solution in Syria

JUST WATCHED Dozens stranded in makeshift hospitals Replay More Videos ... MUST WATCH Dozens stranded in makeshift hospitals 03:26

Lavrov welcomed the "efforts in eastern Aleppo" and recognized "the important role" of the United Nations.

"It has become our opinion there is no military solution to Syrian crisis," the Russian foreign minister said at a press conference following the meeting.

"We welcome the partial evacuation of opposition from a number of locations in Syria and advocate a successful and safe completion of this process," he continued.

He said the three countries would work toward "ending hostilities" and "providing an environment for an efficient and conclusive political process in Syria."

Photos: Battle for Aleppo Civilians wait to be bussed out of besieged areas of eastern Aleppo, Syria, as evacuations continue on Monday, December 19. A people-swap deal struck between rebels and Syrian government forces was set to begin over the weekend, but evacuations were temporarily put on hold after a number of buses were set on fire. Hide Caption 1 of 35 Photos: Battle for Aleppo Syrian pro-government forces wave to evacuees from the villages of Foua and Kefraya on December 19. While people were being bused out of Aleppo, safe passage was also given to people in areas held or besieged by rebels, the Aleppo Media Center activist group said. Hide Caption 2 of 35 Photos: Battle for Aleppo Militants burned at least five buses assigned to evacuate people in Aleppo on Sunday, December 18. Aleppo has been held by rebels for the past four years, but it is now almost entirely under government control. Hide Caption 3 of 35 Photos: Battle for Aleppo Buses drive through the Syrian government-controlled crossing of Ramoussa, on the southern outskirts of Aleppo, on December 18. Hide Caption 4 of 35 Photos: Battle for Aleppo Russian soldiers and Syrian pro-government forces look on as civilians and rebel fighters are evacuated from Aleppo on Friday, December 16. Evacuations began a day earlier under a new ceasefire between rebels and pro-government forces. Hide Caption 5 of 35 Photos: Battle for Aleppo Pro-government forces guard a convoy of buses and ambulances during the evacuation operation on December 16. Hide Caption 6 of 35 Photos: Battle for Aleppo Civilians arrive in the opposition-controlled Khan al-Aassal region, to the west of Aleppo, on Thursday, December 15. Most of the civilians from Aleppo will be taken to a rebel-controlled area in the neighboring province of Idlib. Hide Caption 7 of 35 Photos: Battle for Aleppo A wounded boy sits inside an ambulance during the evacuations on December 15. Hide Caption 8 of 35 Photos: Battle for Aleppo Staff members of the Syrian Red Crescent wait near ambulances as the evacuation operation gets underway on December 15. Hide Caption 9 of 35 Photos: Battle for Aleppo Buses line up to transport people away from eastern Aleppo on December 15. Hide Caption 10 of 35 Photos: Battle for Aleppo A woman leads family members toward the evacuation buses on December 15. Hide Caption 11 of 35 Photos: Battle for Aleppo A woman in a wheelchair waits to board a bus during evacuations on December 15. Hide Caption 12 of 35 Photos: Battle for Aleppo A member of the civil defense carries a wounded boy out of a hospital in eastern Aleppo on December 15. Hide Caption 13 of 35 Photos: Battle for Aleppo Pro-government forces advance in Aleppo on Wednesday, December 14. Hide Caption 14 of 35 Photos: Battle for Aleppo A wounded woman is helped into the bed of a truck on December 14. Hide Caption 15 of 35 Photos: Battle for Aleppo Buses wait to evacuate people in Aleppo on December 14. Hide Caption 16 of 35 Photos: Battle for Aleppo Pro-government forces advance on December 14. Hide Caption 17 of 35 Photos: Battle for Aleppo Pro-government forces walk in the ancient Umayyad Mosque after capturing the area on Tuesday, December 13. Hide Caption 18 of 35 Photos: Battle for Aleppo Syrians depart a rebel-controlled area of Aleppo on December 13. Hide Caption 19 of 35 Photos: Battle for Aleppo Syrian residents, fleeing violence in the Bustan al-Qasr neighborhood, arrive in Aleppo's Fardos neighborhood on December 13. Hide Caption 20 of 35 Photos: Battle for Aleppo A Syrian child cooks in the street in a rebel-held area of Aleppo on December 13. Hide Caption 21 of 35 Photos: Battle for Aleppo Syrian civilians take food from a storage room that was formerly held by the opposition forces in eastern Aleppo's al-Kalasseh neighborhood on December 13. Hide Caption 22 of 35 Photos: Battle for Aleppo Pro-government fighters wave from a truck as they pass civilians fleeing the Bustan al-Qasr neighborhood on December 13. Hide Caption 23 of 35 Photos: Battle for Aleppo A woman reacts as she evacuates the Bustan al-Qasr neighborhood with her two children on December 13. Hide Caption 24 of 35 Photos: Battle for Aleppo Syrians celebrate in a government-held district of Aleppo on Monday, December 12. Hide Caption 25 of 35 Photos: Battle for Aleppo Pro-government forces patrol the al-Saleheen neighborhood in eastern Aleppo on December 12. Hide Caption 26 of 35 Photos: Battle for Aleppo Rebels in southeastern Aleppo target government forces with anti-aircraft weaponry on December 12. Hide Caption 27 of 35 Photos: Battle for Aleppo Civilians flee the Sukkari neighborhood in southeastern Aleppo on December 12. Hide Caption 28 of 35 Photos: Battle for Aleppo Pro-government forces patrol Aleppo's Sheikh Saeed district on December 12 after it was recaptured from rebel forces. Hide Caption 29 of 35 Photos: Battle for Aleppo In this handout photo from the International Committee for the Red Cross, women displaced from eastern Aleppo gather at a shelter in the village of Jibreen, south of Aleppo, on December 12. Hide Caption 30 of 35 Photos: Battle for Aleppo Smoke rises from the Bustan al-Qasr neighborhood on December 12. Hide Caption 31 of 35 Photos: Battle for Aleppo Civilians from eastern Aleppo stream into a government checkpoint at the al-Hawoz street roundabout on Saturday, December 10. Hide Caption 32 of 35 Photos: Battle for Aleppo Rebel fighters take aim at pro-government positions in Aleppo on Friday, December 9. Hide Caption 33 of 35 Photos: Battle for Aleppo Syrian rebels walk down a street in eastern Aleppo on December 9. Hide Caption 34 of 35 Photos: Battle for Aleppo Clouds of smoke billow from eastern Aleppo's al-Shaar neighborhood on Monday, December 5. Hide Caption 35 of 35

The Syrian government has authorized the United Nations to send an additional 20 staff members to eastern Aleppo, where they will monitor the ongoing evacuation, a UN spokesman said Tuesday.

The move comes after the UN Security Council voted unanimously Monday to redeploy UN staff to Aleppo to monitor and report on the evacuation of civilians.

I can't & we can't all be happy until all the remaining people who want to leave are evacuated from East Aleppo. - Fatemah — Bana Alabed (@AlabedBana) December 20, 2016

The resolution stressed "the importance to ensure the voluntary, safe and dignified passage of all civilians from the eastern districts of AIeppo or other areas, under the monitoring of and coordination by the United Nations and other relevant institutions, to a destination of their choice."

Bana Alabed, a 7-year-old girl who has captured the world's attention with her tweets from Aleppo, was evacuated to Turkey with her family Monday.

Her mother, Fatemah, tweeted Tuesday: "I can't & we can't all be happy until all the remaining people who want to leave are evacuated from East Aleppo."