DENVER — A letter purportedly written by a gang member says he fired shots into a limousine where the Denver Broncos' Darrent Williams was killed on New Year's Day of 2007.

The Rocky Mountain News said today it obtained the letter, which carries the signature of Willie D. Clark. Denver police have called him a person of interest in Williams' slaying.

The newspaper published a redacted excerpt of the letter reading, "(Blank) might say somethin stupd talk to law enforcements about the death of D-Will (Williams). (Blank) seen me withe gun + shoot out the whip (car)."

Williams, a 24-year-old cornerback and former Oklahoma State standout, was killed when his rented limousine was sprayed with bullets minutes after leaving a New Year's party at a downtown Denver club.

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 arrested or charged in Williams' slaying.

The News said it obtained the letter from a Denver man who claimed he intercepted it while serving time in a prison where Clark was held. The newspaper said that man also turned the letter over to law enforcement.

The News said it was not identifying the man because he could be in danger for providing the letter.

Clark's attorney, Alaurice Tafoya-Modi, did not immediately return a call Friday, and the News said she didn't return a call from the newspaper after she was faxed a copy of the letter. District Attorney Mitch Morrissey declined to comment.

An independent handwriting analyst hired by the News said the signature on the letter matched previous letters written by Williams to the newspaper and to a federal judge.

In one of those letters to the newspaper, Clark denied he was involved in Williams' death.

On Thursday, the Broncos opened the Darrent Williams Memorial Teen Center in Denver, a collaboration between the team and the Boys & Girls Clubs of Metro Denver.