On Monday morning, October 6, 2015, 20-year-old Muhammad Washington, known to some as Mo, was shot and killed in the 600 block of 42nd Street NE. The shooting occurred about 11:19 a.m. after a personal dispute: a man later identified as Dion X. Martin had been walking through the neighborhood loudly asking for Mo and declaring he intended to shoot him over an allegation that Washington had told people where Martin’s mother lived.

An argument broke out when Washington, an acquaintance of Martin, approached him. After a brief exchange Martin walked away but returned with his hand in his pocket. Washington reached toward Martin, a short struggle followed, and Martin produced a gun and fired one shot into Washington’s chest. Washington ran around a corner and then collapsed and died from his injury.

Witnesses provided information to the Metropolitan Police Department and one witness later told investigators that Martin had confessed. Dion X. Martin was arrested on December 11, 2015; in June 2016 he pleaded guilty to second-degree murder while armed and was sentenced to 16 years in prison with five years of supervised release to follow.

Did anyone in the neighborhood know Muhammad Washington or see him the morning of October 6, 2015?