A maroon Lexus was struck by bullets in a shooting on the night of July 10 in a back alley in the 1300 block of I Street NE in Washington. A 1-year-old boy was struck in the lower extremities during the gunfire. (Peter Hermann/The Washington Post)

A 39-year-old man was charged in a shootout in which a 1-year-old boy was injured, and police said they are looking for two more men they think were involved.

The July 10 shooting happened just before 9 p.m. in an alley in the 1300 block of I Street NE. The boy was treated at Children’s National Medical Center and returned home the next day, police said.

Police said a dispute between groups of people prompted the shooting, which D.C. Police Chief Peter Newsham called “despicable.”

[Investigation continues into shooting of 1-year-old in Northeast Washington]

The shooting happened near the Wylie Court Condominiums, not far from the H Street entertainment area in Northeast Washington.

D.C. police are looking for Saheed Aluwatoyin Washington Sulu, 27, of Southeast Washington in connection with the shooting of a 1-year-old boy. (Courtesy of D.C. Police)

Derrick D. Watson of Northeast was arrested early Tuesday, police said. He was charged with assault with a dangerous weapon.

At a news conference Tuesday, Newsham praised the community for its concern and help in identifying those who may have been involved. He said the incident happened on an evening when people were enjoying the weather in a courtyard. More than one child was playing in the area when “you had three grown men who decided to settle a dispute with firearms,” Newsham said. Police did not elaborate on the reason for the dispute, and court documents were not immediately available.

Newsham called the incident upsetting for those who live in the neighborhood.

“That kid is going to have to live with that for the rest of his life,” he said of the boy, who is recovering at home and said to be doing well.

Police had released surveillance video showing people of interest in the case.

Authorities said Tuesday that they have a warrant for another man, Saheed Aluwatoyin Washington Sulu, 27, of Southeast, in connection with the shooting. They also asked for the public’s help to identify a third person from the surveillance video whom they also think was involved.

Keith L. Alexander, Magda Jean-Louis and Peter Hermann contributed to this report.