Gates initially refused to hand over his ID, instead angrily accusing the officer of being a racist and "leveling threats that he wasn't someone to mess with," the report says.

After Gates produced his Harvard University ID, he repeatedly demanded Crowley state his name, which the officer claims he had already done.

Crowley said Gates continued hurling insults at him as he left the home. Crowley arrested the scholar for disorderly conduct.

"He was arrested after following me outside the house, continuing the tirade even after being warned multiple times - probably a few more times than the average person would," Crowley told the radio station.