DENVER -- DNA from a ball cap helped police make an arrest in the shooting death of a local rapper.
Tyrone Adair, aka Boss Goodie, was shot and killed outside the Cold Crush nightclub on October 10.
Witnesses told police there was a fight before the shooting and that Adair had helped club security remove two men in ball caps, according to the probable cause statement obtained by Denver7.
One of the ball caps was found in the nightclub. DNA from the ball cap matched 27-year-old Harold Alexander Mortis, according to the probable cause statement.
Mortis was arrested last month on suspicion of aggravated robbery. A search warrant of Mortis' residence found ammunition that was the same brand and caliber as six spent cartridge casings found at the Cold Crush nightclub shooting, the probable cause statement said.
In December, a witness told police that Mortis got in a fight at the nightclub and was escorted out of the building. The witness told police when they got to their car, Mortis wrapped "his shirt around his head and started walking back towards Cold Crush," the probable cause statement said.
"The witness related he/she then heard four to six gunshots," the statement said. "The witness said he/she sees Harold firing the gun."
The Denver District Attorney's Office has charged Mortis with first degree murder and possession of a weapon by a previous offender.