Yisrael Hazaka chairman Ephraim Sneh's car was torched next to his Herzliya home overnight Saturday.
Police said that the head of the party with the "Getting Rid of Crime" slogan received a threatening phone call before discovering the burnt-out vehicle. Sneh told police that the voice on the other end of the line said, "Just like we burnt your car, we'll also burn you."
Police launched an investigation, but no arrests have yet been made.
Sneh has recently demanded an "Operation Cast Lead" against criminal organizations.