WALTHAM, MA - Multiple calls were received by the Mass State Police reporting a six-car accident with multiple injuries on I 95 south, near Rt 20 in Waltham. Waltham Engine 2, Rescue 1, Medic 1 and Ambulance 1 were dispatched. The six cars were all up against the guardrail. Five people, including two children, were transported to Newton Wellesley Hospital with unknown injuries.