The Rocky Mountain News says it has obtained a letter purportedly written by a gang member who says he fired shots into a limousine where the Denver Broncos' Darrent Williams was killed.
In a copyright story published Friday, the newspaper says the letter carries the signature of Willie D. Clark. Denver police have called Clark a person of interest in Williams' slaying.
The 24-year-old Williams was killed when his rented limousine was sprayed with bullets minutes after he left a New Year's party in downtown Denver in 2007.
Clark was arrested on a parole violation after Williams' death and is now in jail awaiting trial on drug charges. Neither he nor anyone else has been charged in Williams' slaying.
The News says it got the letter from a Denver man who claimed he intercepted it while serving time in a prison where Clark was held.
The newspaper says the letter has been provided to investigators.
Clark's attorney hasn't returned calls. Denver District Attorney Mitch Morrissey has declined to comment.