On the afternoon of Wednesday, August 26, 2009, Joshua Mack, also known as Tyli’a Na Na Boo Mack, was stabbed and died about 2:38 p.m. on the 200 block of Q Street NW in Northwest Washington, D.C. The attack occurred in broad daylight in a normally quiet residential area; emergency responders arrived but Mack succumbed to his injuries.

The Metropolitan Police Department opened a homicide investigation and released a description of a person of interest: a medium-complexioned Black male, about 5 feet, 10 inches tall, thin build, short black hair, believed to be in his 30s at the time. He was reportedly seen wearing a blue shirt and blue pants and was armed with a knife. No motive has been made public and no arrest has been announced.

Anyone who was in the Q Street NW area that afternoon or who has information about the man described is asked to come forward.