The NYPD is investigating after three people, including a 16-year-old, were shot in the Bronx on Sunday night.

Police said two people were in custody in connection with the triple shooting on Brook Avenue near 142nd Street in Mott Haven.

Officers responded just before 9 p.m. to a 911 call for an assault at 370 Brook Ave. There, a 16-year-old boy and 20-year-old man were found with gunshot wounds to the back. A 29-year-old man was also shot in the leg.

The shooting happened one year after CBS News New York reported on the shooting death of a 17-year-old, and that victim did live at the building where Sunday's gun violence occurred. At the scene, candles were still glowing from a vigil, and about a block away shell casings were seen near a parked car.

An employee at a bodega on the corner said she heard the shots.

"I see a lot of people running and they just ... pop pop pop. Maybe three or eight [shots were fired]," she said. "Somebody was on the floor. One or two [were taken to] the hospital."

Police said all three victims were in stable condition.

The NYPD said overnight they had two people of interest in custody and were still looking for a third person, but no arrests have been made so far. 

Police have not released a description of the gunman and do not know if the shooting was targeted.

Anyone with any information is asked to call the NYPD's Crime Stoppers hotline at 1-800-577-TIPS (8477), or for Spanish, 1-888-57-PISTA (74782). You can also submit a tip via their website or via DM on Twitter, @NYPDTips. All calls are kept confidential.