A pickup truck and several cars were involved in an accident on Interstate 93 South at East Milton Square.
Two separate crashes within five minutes of each other tied up traffic along Interstate 93 in Milton and Quincy, sending four people to the hospital for minor injuries this afternoon, State Police said.
Just after 1 p.m., two pickups, a 2008 Dodge Caravan, and a 2003 Cadillac collided while southbound just before Exit 8 in Milton. No one was injured in that crash, but two lanes were shut down for about 30 minutes.
Five minutes later, on the other side of the highway, four vehicles collided near Exit 9, forcing the closure of two lanes. Four people in that crash were sent to Quincy Medical Center.
State Police are investigating both accidents.
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