(TMZ) - The guy who voiced Charlie Brown in multiple Peanuts specials has been arrested in San Diego after authorities say he stalked someone.

56-year-old Peter Robbins -- who voiced CB in "A Charlie Brown Christmas" and "It's the Great Pumpkin, Charlie Brown" -- was busted at the San Ysidro Port of Entry this weekend after a background check revealed an active warrant out for his arrest.

According to the AP, Robbins is set to be arraigned Wednesday for making a threat to cause great death or bodily injury and stalking. It's unclear who Robbins is accused of stalking and threatening.

A rep for the voice actor had no comment.