On Saturday, August 13th, at approximately 01:05am, Somerville 911 received two calls reporting shots fired around Memorial Rd. In speaking with witnesses and reviewing video in the area, police learned a suspect on foot exchanges gunfire with two suspects operating a scooter on River Road. Officers recovered more than 15 shell casings on River Rd. No victims or injuries have been identified at this time, but police have located ballistic damage to vehicles and buildings.