(CNN) -- It was only after a crowd of screaming students ran past Darnell Rodgers in a stairway at his Cleveland, Ohio, high school Wednesday afternoon that he realized he had been shot.
A shooting victim gives the thumbs up as he is carried out of SuccessTech Academy. more photos »
"They were screaming, 'Oh my God! Oh my God,'" said Rodgers, a senior at SuccessTech Academy near downtown Cleveland.
Rodgers suddenly felt his arm "burning," he said, and realized he had been shot in the elbow.
Police have started to piece together what happened.
At around 1:15 p.m. ET, 14-year-old gunman Asa Coon, who was a student at the school, walked the halls firing a gun in each hand, Cleveland Police Chief Michael McGrath said.
When it was all over, five people had been shot, but the only fatality was Coon, who police said killed himself in a classroom.
Police found a .22- caliber revolver and .38-caliber revolver near Coon's body, along with a box of ammunition and three knives, said McGrath.
Investigators have reason to believe some victims were specifically targeted by Coon, who had been suspended from school Monday. Watch what happened at the school -- and the warning signs »
"We do not believe this was a random shooting," McGrath said.
"It may have been the teachers he went to the school looking for. ... I believe they disciplined him in some manner."
Rodgers was treated and released from the hospital, but others were more seriously injured.
Coon shot 57-year-old teacher David Kachadourian in the back and shot a 42-year-old teacher in the chest, officials said.
Edward Eckart, commissioner of EMS Cleveland, said the 42-year-old underwent surgery at MetroHealth Medical Center and was in stable condition at 8 p.m. Wednesday.
Fifty-seven-year-old Kachadourian was in stable condition, he said.
In addition, a 15-year-old male with a gunshot wound to his side and a 15-year-old female with a knee injury were transported to Rainbow Babies and Children's Hospital, where they were in stable condition Wednesday night, Eckart said.
McGrath said Coon and another student were suspended Monday after they apparently got in a fight outside the school.
Coon had a previous arrest last year for a domestic violence incident, and police had been to his home before for incidents that involved weapons, according to McGrath.
Police searched the gunman's locker after the shooting and are watching surveillance footage of the school taken at the time of the shooting, he said.
Students said they took cover in closets after the school principal announced a "Code Blue" on the intercom.
Students described the gunman as being "odd." Watch students describe the shooting »
Rodgers spoke to reporters after leaving the hospital Wednesday evening.
He called the shooting "very shocking" and said he was "sad" it could happen at a school he thought was safe. Check out other school shootings in recent years »
"I never thought it would personally happen at my school."
District schools will be closed Thursday. Recreation centers will be open and counselors will be available for city residents.
Friday was already going to be a professional day for faculty and will now be devoted to figuring out how to go about resuming classes on Monday.
Cleveland Municipal School District CEO Eugene Sanders said the community and everyone with ties to SuccessTech needs "to take a breather and relax a moment and put this in perspective."
SuccessTech is a nontraditional high school, according to local school officials.
"Since it is a specialty school," it doesn't have "the typical population of a large high school," said Lisa Matthews of the superintendent's office.
It is a "school of choice" -- students have to apply to get in, said Ruthie Williams, also of the superintendent's office. She said classrooms are on the first and third floors of the four-story building and the rest contains the school district's administrative offices.
The academy describes itself on its Web site as a "small, nontraditional high school that provides a learning environment in which all student believe in their ability to succeed."
It adds that the curriculum is "problem-based" and "infused" with technology.
The school was founded in part with a grant from the Bill and Melinda Gates Foundation.
No metal detectors were at the school on Wednesday, although the school board has portable detectors that are randomly moved from school to school, McGrath said. An armed security guard was at the front desk, he added. E-mail to a friend
All About Cleveland
Location of Ohio within the United States.
A 14-year-old student opened fire in a Cleveland, Ohio high school today, wounding four people. The gunman then fatally shot himself.

Police were called to the scene at 1:15 p.m. EST, with reports of a gunman in the school. The gunman, 14-year-old Asa H. Coon, entered the school with a gun in each hand. Students were evacuated, with the gunman reportedly still in the building for some time afterward.

According to Cleveland mayor Frank Jackson, two adult males, ages 57 and 42, and two teenage males, ages 18 and 14, were wounded, and taken to local hospitals. A third teenager, a 14-year-old female, hurt her knee while running from the school.

A spokesperson for the hospital would not give details of the students' names or conditions, but Jackson said in an afternoon press conference that all three teenagers were in stable condition.

According to one student, 14-year-old student Michael Peek was the first person shot, after reportedly punching Coon in the face.  The student indicated that Peek did not know that Coon was armed at the time. 18-year-old student Darnell Rodgers told the media that he was the other student shot, a graze wound for which he was treated and subsequently released.

The 57-year-old teacher, David Kachadourian, was listed in good condition. 42-year-old teacher Michael Grassie was in surgery and his condition was unavailable.

The gunman was reportedly upset about a recent suspension arising from a fight that happened Monday near the school.

According to one student interviewed by ''CNN'', the gunman said he "worshiped the devil" and had mentioned committing a shooting at the school. Another student noted that the gunman often wore a trench coat and an empty pistol belt to class.

A security guard was present on the first floor of the building, but the position of a guard on the third floor was eliminated. While metal detectors were present in the building, they were not always in use; it is unclear whether they were in use at the time of the shooting.

The school, SuccessTech Academy, is a non-traditional school within the Cleveland Metropolitan School District, described on their web site as a "small, nontraditional high school that provides a learning environment in which all student believe in their ability to succeed."  It opened five years ago.

SuccessTech is located on the third, fourth and fifth floors of a building in downtown Cleveland that also houses some administrative offices.

The school owes its existence in part to a grant from the Bill and Melinda Gates Foundation, which helped to fund the creation of the school.