Four youths turned up at the residence of Shillong unit of Congress Coordination Committee secretary Donkupar War yesterday and started beating him up, police said.
The youths then set his vehicle on fire and escaped after sighting neighbours coming to the aid of War, they said.
The vehicle was partially damaged in the blaze.
War lodged an FIR at Lumdiengjri police station, however, the reason behind the attack was not yet clear, police said.
