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Acting Essex County Prosecutor Carolyn A. Murray announced today that authorities were investigating the fatal shooting of Abner Dominguez, 36, of Jersey City, on Tuesday night in Newark. (File photo)

(Ed Murray/The Star-Ledger)

NEWARK -- In what represents the 101st homicide in Newark this year, a Jersey City man was gunned down Tuesday night, authorities said.

Abner Dominguez, 36, was fatally shot in the area of 93 Roseville Avenue in Newark, according to a news release issued today by Acting Essex County Prosecutor Carolyn A. Murray.

Police were initially called to the scene shortly before 10 p.m., according to Katherine Carter, spokeswoman for the prosecutor's office. Dominguez was transported to University Hospital, where he was pronounced dead at 10:56 p.m., authorities said.

Authorities said the motive in the killing remains unclear. No suspects have been identified and no arrests have been made, authorities said.

The case remains under investigation by the Newark Police Department and the Essex County Prosecutor's Office Homicide/Major Crimes Task Force, authorities said.

With Dominguez's killing, Newark has recorded eight more homicides than during all of 2014. The shooting occurred several hours after the prosecutor's office announced another pair of homicides in Newark.

In one case, a 57-year-old man was fatally shot at about 1:35 p.m. Monday near the intersection of Speedway Avenue and Rodwell Avenue, authorities said. His identity has not been revealed, pending notification of his family members, authorities said.

Around the same time, medical examiners ruled the death of 42-year-old Keith Barnes a homicide, 15 days after he was found suffering from "blunt force trauma" injuries at a home on South 11th Street, authorities said.

Authorities said no arrests had been made in either case, and they released no information about any potential motive or suspects.

Anyone with information about the latest three homicides is asked to contact the Essex County Prosecutor's Office Homicide/Major Crimes Task Force tips line at 1-877-TIPS-4EC or 1-877-847-7432.

Bill Wichert may be reached at bwichert@njadvancemedia.com. Follow him on Twitter @BillWichertNJ. Find NJ.com on Facebook.