D.C. police Monday arrested a man in Friday night’s shooting of a 7-year-old girl who authorities said was wounded by a stray bullet as she walked home from dinner with her family in Southeast Washington.

Michael Wiggins, 27, of Southeast, has been charged with assault with a dangerous weapon and unlawful possession of a firearm. He could make his initial appearance in D.C. Superior Court on Tuesday.

“In this particular case, I can’t underestimate the amount of people who called in with information,” Assistant D.C. Police Chief Peter Newsham said in announcing the arrest at the start of a walk with the mayor and residents along the street where the girl was shot. “One of those tips led to closing this case. We believe we have the one shooter who is responsible.”

D.C. Mayor Muriel E. Bowser said residents who provided information were “fed up with senseless violence and the gunshots they’ve heard in their neighborhood, and they drew the line.”

Police said the gunfire came from a group of people arguing in the 2900 block of Knox Place SE. One of four bullets fired shattered the rear window of a car and another struck the child in the abdomen. She was in fair condition at Children’s National Medical Center, a spokeswoman said. Newsham said detectives do not know details of the dispute, but he said police had recovered a weapon.

D.C. Mayor Muriel Bowser leads a public safety community walk through a southeast D.C. neighborhood where a 7-year-old girl was shot over the weekend. (Jahi Chikwendiu/The Washington Post)

[Girl’s condition improves after shooting that rattled her neighborhood]

Newsham praised the girl’s father for quickly grabbing a towel to press against his daughter’s wound and stopping the bleeding. “It’s amazing, it’s remarkable,” Newsham said. “It’s very heroic, and in all likelihood he saved her life.”

Arline Mobley, who lives in an apartment along Knox Place, said she saw a family of four walking around the corner and then heard gunshots. She said she watched the family scramble and drag the wounded child into another building for safety.

“I heard the shot and I saw them pulling the kid for their lives,” Mobley said Monday.

Evette Barnette, 41, was sitting in her ground-floor apartment and told The Washington Post on Sunday that she heard a commotion in the lobby and a man yelling, “Stay with me! Stay with me!”

She went out to find the girl’s father cradling his daughter, with the younger brother looking on and screaming, “My sister!” Barnette said she grabbed a towel from her apartment and gave it to the father, who applied pressure to his daughter’s torso while they waited for paramedics. She took the 4-year-old brother into her apartment to watch cartoons.

Mobley said she went to the street as they were putting the young victim into an ambulance. “I was petrified,” she said. “I couldn’t believe someone shot the child. I heard the mother holler. That is a holler you don’t forget.”

Jennifer Jenkins contributed to this report.