A 12-year-old boy was wounded by gunfire Tuesday evening near a park on Chicago’s Near West Side, police said. Officers were notified about 5:10 p.m. of a shooting in the 2200 block of West Maypole Avenue, near North Leavitt Street. The boy was struck by gunfire from an unknown source and sustained a graze wound to his thigh, authorities said. He was taken to a hospital and was in good condition. Area detectives were investigating. Police did not release further details about what led to the shooting or whether anyone was in custody.