I-5 southbound was blocked near Martin Way East after a crash. Drivers were urged to reschedule or delay trips through the area.

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Four people were injured and drivers faced delays on Interstate 5 near Lacey on Wednesday after a crash involving four large trucks blocked all southbound lanes in the area. All lanes reopened at about 8:15 p.m.

The crash happened at about 2:40 p.m. at milepost 109 near Martin Way East, according to the Washington State Department of Transportation. Three semi trucks and one box truck were involved, according to the State Patrol.

One semi driver suffered serious but non-life-threatening injuries after being trapped inside his truck, said Lacey Fire Battalion Chief Steve Crimmins. Another semi driver, the box-truck driver, and a passenger in the box truck suffered minor injuries, Crimmins said. All four were transported to St. Peter Hospital in Olympia.

Washington State Patrol video from the scene showed a pileup of the four trucks. The driver of the semi truck in front of the wreck was not injured, Crimmins said. Investigators are still determining the cause of the collision.