A 17-year-old student was shot and killed in the parking lot of Roosevelt High School in Northwest D.C. on Wednesday afternoon while school was in session, according to D.C. police.

Police responding to the scene found the student suffering from a gunshot wound and took him to an area hospital, where he was pronounced dead.

“I want to sincerely, sincerely offer my condolences to this family on the loss of their young one today,” assistant police chief Morgan Kane said at a press briefing on Wednesday outside of the high school.

Kane said that a preliminary investigation into video footage of the scene suggests that someone shot the student after some kind of altercation in which multiple shots were fired. Police recovered a gun from the parking lot, and they’ve traced a vehicle and driver that also appeared on the video.

Kane said police detectives are reviewing additional video footage and attempting to talk to eye witnesses in the area.

The Roosevelt High School campus and neighboring MacFarland Middle School and Dorothy Height Elementary School went into lockdown after the shooting, from 2:30 p.m. until a staggered dismissal beginning at 3:30 p.m. Kane said the victim had been in school at Roosevelt earlier in the day.

Police have not officially released the name of the student who was shot and killed. Multiple local news outlets have reported his name as Jefferson Perez, 17. His bereaved grandmother told FOX 5 and WUSA 9 that Perez, who came to D.C. from El Salvador as an infant with his family to flee gang violence, had been the target of threats from other young people.

The high school opened on Thursday, and DCPS mental health clinicians will be providing students with counseling, according to a letter sent by Roosevelt principal Courtney Wilkerson to parents and shared with FOX 5.

The tragedy at Roosevelt comes just days after 10-year-old Arianna Davis was shot on Sunday night in Northeast D.C. while riding in a car with her parents, and after a 12-year-old was grazed by a bullet while sleeping in her bed. Davis died at an area hospital on Wednesday evening, hours after the shooting at Roosevelt.

“I live in Washington, D.C. I have an eight year old son. So, too, I can’t overstate how heartbreaking it is, how heartbroken I am right now for our kids with what we see happening as a police agency and as a city,” said Kane, responding to a question about the violence hurting the city’s young people. “But what I will tell you is that it just makes us more deliberate and intentional in our resolve to put our hands around what is happening with our kids.”

A young girl was also shot in Alexandria near the Braddock Road Metro stop on Tuesday afternoon, according to police. The girl was taken to the hospital with serious but not life-threatening injuries.

More than 40 young people in D.C. sustained gunshot wounds from January 1 to May 4 this year, according to a presentation from D.C. police chief Robert Contee last week. That number is a significant increase from the same period last year, when 22 children were hit by gunfire.

D.C. Mayor Muriel Bowser is pushing for harsher punishment for gun crimes and increased pretrial detention in response to a worrying uptick in violence, though some criminal justice advocates do not believe the proposed measures will successfully combat the increase in crime. In remarks at Roosevelt High on Wednesday evening, Bowser said she hoped the D.C. Council would take swift action on her proposals, according to NBC 4.

This has been a deadly year so far in D.C., though still well below the worst crime spikes of the 1990s. Homicides are up 9% so far in 2023 compared to the same period in 2022, with the summer — a season that usually sees heightened violence — starting.