A Berks County judge says a Pennsylvania state senator who allegedly displayed a handgun while driving on Interstate 78 is guilty of a summary charge of disorderly conduct.

District Andrea Book convicted Sen. Bob Mensch after a hearing that lasted more than two hours.

Mensch faces a maximum $300 fine and 90 days in jail, but the prosecutor says he will not recommend jail time.

Mensch, a Montgomery County Republican, denied displaying any weapon even though state troopers who stopped him after the March 9 incident found two handguns in his vehicle. Mensch, who has a permit to carry the weapons, said the other motorist was harassing him

The other motorist, Brian Salisbury of Easton, called 911 after he says Mensch displayed the gun in the palm of his hand.