Milford Police arrested 47-year-old John Katrick on Monday morning.
Police say he damaged the door of a restaurant on New Haven Avenue and smashed some potted plants outside.
Officials say officers also spotted him throwing cinder blocks at passing cars.
According to police, Katrick had a screwdriver in his hands when they got there. When they ordered him to drop it, he allegedly tried to get into his car instead.
Officers later used a stun gun on him and took him into custody.