(Tigard, OR) -- A Tigard man has been arrested for an unprovoked attack on a 61-year-old woman at the Tigard Fred Meyer store. The victim was leaving the store when a man suddenly punched her twice in the head. An employee called 9-1-1. The woman was evaluated at a hospital and released. The suspect was gone. Later, 25-year-old Isaiah Marquis turned himself in to Tigard Police. He didn't give a reason for the attack. He is charged with Assault in the fourth degree.