Rockets guard Rafer Alston said Monday he was innocent of misdemeanor assault and public intoxication charges filed against him a day earlier.

Alston was accused of grabbing a parking attendant's arm, shaking him and spitting on him after Alston's vehicle was towed from a lot early Sunday. The attendant said Alston parked illegally and did not pay.

Alston told Houston television station KRIV that he didn't do anything to the attendant.

"We got into a shouting match. My car was towed and I was basically asking the parking attendant where he had my car towed to," Alston said in a story on KRIV's Web site. "There were no hits, nothing transpired. The guy runs off and yells down the street, like, he needed an officer over here. Before you know it, the officer puts me in cuffs and takes me downtown."

"I asked the guy what was I being charged with and he said public intoxication and assaulting someone, and I said, 'I am neither of those,'" Alston said.