A significant police response has been activated on Memorial Drive in Cambridge following reports of multiple gunshots. Eyewitnesses indicate that an armed individual carrying a rifle opened fire during daylight hours, prompting an urgent emergency response. Initial reports suggest that at least two people have been shot, and there is at least one individual injured in a police-involved confrontation. The area has been temporarily closed off to the public as authorities manage the situation, with large police presence on-site and ongoing investigations into the incident.