A Minnesota man is accused of trapping a police officer's arm in the window of his truck, then attacking him with a hammer. Hang on, you're in for quite a tale: It started when 61-year-old Luke Oeltjenbruns attacked a Menard's employee with some lumber over a facemask dispute. He spotted by an officer leaving the store and was pulled over following a "slow-speed chase" through a mall parking lot. During the stop, Oeltjenbruns then rolled up his truck window, trapping the officer's arm inside, then drove off at 40 miles per hour with the officer left standing on the truck's sideboard. The officer used his rescue hammer to shatter the window and free his arm - only for Oeltjenbruns to grab the hammer and hit the officer in the head. Oeltjenbruns is in custody on charges of first-degree assault with great bodily harm