Neighbors at a Bucks County apartment complex were jolted by fear Wednesday after four people were shot, one fatally, the previous night.

“I’m shooken up because I have kids,” said one woman who lives at the Commons at Fallsington, a large apartment complex with 10 yellow-brick buildings bordered by West Trenton Avenue and Makefield Road in Falls Township.

The woman, who asked not to be identified because she feared for her safety, said she was driving home Tuesday night with her 10-year-old daughter when police cars rushed in behind her.

Shootings at the apartment complex are unusual, she said, and she couldn’t sleep Tuesday night, waiting up for her 20-year-old daughter to return home from work early the next morning.

“We don’t know what’s going on,” she said Wednesday.

Falls Township police said an 18-year-old man was killed in the shooting.

He was identified Friday by the Bucks County District Attorney’s Office as Yusuf McNeal, of Philadelphia.

Around 9:30 p.m. Tuesday, police responded to the apartment complex and found shell casings but no victims. Authorities said three victims, all juvenile boys, ages 15, 16, and 17, had been taken by private vehicle to Jefferson Bucks Hospital with gunshot wounds. One of the teens remained hospitalized Friday while the other two have been released, a spokesperson for the DA’s Office said.

Separately, the 18-year-old man was taken by private vehicle to Lower Bucks Hospital with a gunshot wound to his chest. He was pronounced dead shortly afterward.

The shooting likely stemmed from a dispute between two groups, police said Wednesday, declining to release any further information, including whether the victims lived at the apartment complex.

No arrests had been made, but Bucks County District Attorney Matthew Weintraub said authorities were working diligently on the case.

“This type of violence is certainly rare in Bucks County as compared to other counties that it borders,” he said in a statement, “but any gun violence here is unacceptable, and we are presently utilizing every investigative tool that we have to solve this crime.” His office declined to release further information, citing the “very active and ongoing investigation.”

At the apartment complex Wednesday, one resident said she heard six gunshots, looked out her window, and saw a man running into a silver car, which then drove off. She said she didn’t hear any arguments or other loud noises outside before the gunshots rang out.

“I don’t feel confident staying here any longer,” said the 53-year-old woman, who asked not to be identified out of fear of her safety.

Lindsay Hanna, property manager for the apartment complex, said Wednesday that she did not have any information about the shootings, including the victims’ names or whether they live at the complex. She said her office is fully cooperating with police.

Anyone with information about the incident is asked to contact Sgt. Ray Fanelli at 215-949-9100 Ext. 439 or r.fanelli@fallstwp.com.