DALLAS Cowboys' stars wide receiver Michael Irvin and tackle Erik Williams are being investigated on possible sexual assault charges following an alleged incident at Williams' home on Sunday night.

Police are investigating a complaint from a 23 year old woman who claims she was forced to have sex at gunpoint at Williams' home.

Irvin allegedly pointed the gun while the woman was ordered to have sex with Williams and another man.

Goelden said police searched Williams's residence and gathered evidence, including a video tape. The woman is an acquaintance of Williams. he added.

No arrests have been made. but the three men may be charged with aggravated sexual assault.

Williams refused to comment while Irvin denied the accusation.

haven't done anything in any way, shape or form to violate my probation," he said.

"I've done enough bad things to my family and teammates but I have not done anything. I don't even know what anybody's talking about," he said.

The 30 year old Irvin is currently on probation after pleading no contest to a second degree felony drug possession charge. He was also sentenced to perform 800 hours of community service and the charge will be removed from his record if Irvin remains out of legal trouble for four years.

The five time Pro Bowler was also suspended by the NFL for the first five games of the season for violating the league's substance abuse policy.

If charges are filed in connection with the new allegation, Irvin's probation could be revoked and he could be sentenced to 20 years in prison.

A Cowboys spokesman said the team will not comment on the matter until additional information is gathered. Dallas play the Carolina Panthers on Sunday in an NFC Divisional play off game.

The Cowboys defeated the Minnesota Vikings, 40-15, in a wild card play off game last Saturday.

The allegations are the latest in a long list of off the field problems that have rocked the defending Super Bowl champions.

Williams also had a previous brush with the law. The 28 year old All Pro was accused of sexual assault in the spring of 1995 before a grand jury failed to indict him. citing insufficient evidence.

The jury made its ruling after Williams reached a civil settlement with a 7 year old girl.

The Cowboys, who have won three of the last four Super Bowls, are already without star defensive lineman Leon Lett, who was suspended for a year by the league for failing a drug test. It was the second suspension for Lett, who was banned for the first four games of the 1995 season.