Centennial, Colo. ? A newly released investigator’s report says Broncos receiver David Kircus threatened a man after Kircus allegedly punched him in the face.

Kircus faces a second-degree assault charge after an altercation at a party in suburban Denver early Sunday. Prosecutors added a second count, violent crime, as a sentence enhancer that could lead to a stiffer penalty if he is convicted.

An Arapahoe County sheriff’s report made public Friday said Kircus had been asked to leave the party, and the alleged victim had escorted him to the sidewalk. The report said Kircus pointed out they were no longer on private property and hit the other man in the eye, causing multiple fractures.

“You don’t know what I’m capable of,” Kircus told the man, according to the report.

Kircus, who resumed his NFL career last season after spending a year away from football working in a sandwich shop, is free on $6,000 bail. If convicted, he could be sentenced to two to six years in prison.

At a hearing Friday, District Judge Anne Ollada granted a request from Kircus’ attorney, Harvey Steinberg, to change the terms of a restraining order against Kircus so he can travel out of state this weekend.

Ollada also agreed to remove a provision that barred Kircus from drinking alcohol, but after a prosecutor said Kircus may have a DUI conviction on his record, the judge said the ban could be reimposed.

In July 2005, Kircus pleaded guilty in Hudsonville, Mich., to driving under the influence. He was ordered to pay $850 in fines.