On Friday, a gunman opened fire in the nation’s capital, wounding four people, including a 12-year-old girl. The injured were expected to recover, but the suspect died.

Police did not release the suspect’s name, pending notification to his family, after finding the suspect dead inside an apartment at the scene The suspect’s name was withheld pending notification of his family after officers discovered him dead inside an apartment as they searched nearby buildings.

Authorities had said earlier that they were seeking a 23-year-old Virginia man as a person of interest. The man had been “linked to social media postings” that emerged as part of the investigation, said Assistant Metropolitan Police Chief Stuart Emerman.

Police believe the man erected a “sniper-type setup” with a tripod and rifle in his apartment and began firing indiscriminately at people walking below, Chief Robert Contee said. The shooting was recorded and posted online on 4chan, an online message board.

Police in Fairfax County, Virginia, said Saturday they had identified a residence tied to the suspected shooter and assisted District of Columbia officers in executing a search warrant. A Fairfax spokesman, 2nd Lt. Ian Yost, said his information indicated authorities did not find any family members there.

Separately on Friday, emergency medical crews were called to the Supreme Court around 6:30 p.m. after a man set himself on fire outside the building. Police said Saturday that the man, Wynn Bruce, 50, of Boulder, Colorado, had died.

The four shooting victims — a 54-year-old man who is a retired police officer, a woman in her 30s, a woman in her mid-60s who was grazed by a bullet, and a 12-year-old girl who was shot in the arm — were all expected to recover, police said. For hours, authorities had warned residents to stay inside their homes while they searched for the shooter.