An arrest has been made in connection with the murder of Dallas rapper Mo3. Kewon Dontrell White, 21, was arrested after a witness contacted police during the investigation with evidence that led to his capture. White was taken into federal custody for a prohibited person in possession of a firearm and murder. A bond will be set at a later date. Mo3, real name Melvin Noble, was shot and killed on a busy Dallas highway. Police conclude that White got out of his car and fired at Noble as he got out of his car and ran.