Update at 4:50 p.m. — All lanes have reopened.
Update at 4:00 p.m. — The trapped victims have been extricated from the van. Rescuers are starting to clear the scene and police are planning on reopening at least one right-hand lane shorty.
Earlier: Police and firefighters are on the scene of an overturned minivan on I-395.
The incident happened just before 3:15 p.m., on the mainline northbound lanes under Shirlington Circle. As of 3:20 p.m., the northbound lanes were completely blocked and traffic was being diverted onto the circle.
Rescuers are reporting three people injured, with two people still trapped inside the van. Firefighters are currently trying to extricate the two trapped victims from the vehicle.
Photos courtesy @gogogaryo as noted