Halton police are looking for a man who attacked an elderly man in Acton. Investigators say it was an unprovoked attack. Last Monday afternoon a man was walking his dog across Mill Street East near Main Street North when a vehicle sped up forcing the man to pick up his dog, rush across the street and into a nearby store.Police have released surveillance video showing the man following the senior into the store. He then yells at him and pushes him to the ground. The senior suffered bruising and cuts and some muscle damage. Police are looking for a man who is in his late 30’s, about six feet, 190 pounds with black shoulder length hair and a muscular build. He was driving a grey minivan, possibly a Dodge Caravan.Anyone with information’s asked to call Halton Regional Police at 905-825-4747 x2415, or Halton Crime Stoppers at 1-800-222-8477. Cell phone users can also text ‘tip201’ with your message to 274637.