Pittsburgh, PA - Federal prosecutors in Pittsburgh want a magistrate to keep a former dentist jailed until he can stand trial on charges he threatened a Pittsburgh FBI agent over the phone.

According to documents filed Monday, Anthony Dinozzi, of Youngwood, is charged with calling the agent on Thursday and screaming obscenities and threats, including to have the Hells Angels motorcycle gang beat the agent.

The FBI says in a criminal affidavit that Dinozzi attempted to pass himself off as a federal agent at Pittsburgh International Airport last February and has previously made repeated fanciful calls to the FBI in Seattle hoping to get them to investigate Microsoft founder Bill Gates for unspecified reasons.