From https://www.nydailynews.com/new-york/nyc-crime/ny-teen-gunned-down-outside-bronx-high-school-mourned-20220409-nqazbnclvjeqjfpkteys3bvdsu-story.html

A teen-age suspect was arrested early Saturday for killing a 16-year-old girl with a stray bullet when he opened fire outside a Bronx high school in an apparent gang dispute, police sources said.

Investigators were questioning the unidentified 17-year-old, with no charges immediately filed in the Friday slaying, police sources said. The suspect was embroiled in a shouting match with a group on St. Ann’s Ave., with the teen flashing gang signs and taunting the other youths before pulling a gun and squeezing off a half-dozen shots, cop sources indicated.

While the suspect bolted from the scene, detectives conducted an extensive canvas of the area and uncovered video of the teen running inside his nearby home, the source said. Before his arrest, the youth was seen throwing a black plastic bag from a window — with cops locating a “ghost gun” hidden inside, the source added.

He was taken into custody after police questioned him with his mother present, the source said.

[Angellyh] Yambo was standing outside University Heights High School’s South Bronx Campus on E. 156 St. near St. Ann’s Ave. Friday afternoon when she and two other teens were hit by bullets fired in a dispute between “brazen criminals,” NYPD Police Commissioner Keechant Sewell said.

Angellyh was shot in the chest. EMS rushed her to Lincoln Hospital, where she died. The other teens, another 16-year-old girl and a 17-year-old boy were also hit by bullets and are expected to survive.

The shooter was standing on the southeast corner of the intersection arguing with someone across the street, police said. The gunman fired off six shots, striking Yambo, and the two other teens.