The actor, 78, was a featured guest at Monster-Mania Con in Cherry Hill, N.J. He was charged with two counts of criminal sexual contact, among other counts, the police said.

The actor Gary Busey, who earned an Oscar nomination for his role in the 1978 film “The Buddy Holly Story,” was charged on Saturday, the police said 

The charges were filed on Friday after the authorities responded to reports of a sexual offense at the convention 

Mr. Busey, 78, who lives in Malibu, Calif., was scheduled to be a featured guest at the event, which took place from Aug. 12-14 at the Doubletree Hotel in Cherry Hill, a Philadelphia suburb.

Mr. Busey was charged with two counts of fourth-degree criminal sexual contact 

one count of fourth-degree attempted criminal sexual contact and one count of harassment. 

The police said the investigation was continuing. Additional details about the charges were not immediately available. 

The police did not immediately respond to calls and emails on Saturday, and the Camden County Prosecutor’s Office referred questions to the police. 

Mr. Busey’s manager did not respond to emails, and a representative for the hotel could not immediately be reached. 

A lawyer for the convention, Nikitas Moustakas, said the convention company was “assisting authorities in their investigation into an alleged incident involving attendees