UPPER MARLBORO, Md. (AP) — Authorities say part of southbound Route 4 in Prince George’s County has been closed following a crash that critically injured two people.

Maryland State Police say an SUV collided with another vehicle at U.S. Route 301 in Upper Marlboro about 5:50 a.m. Thursday. Mark Brady, a spokesman for the Prince George’s County fire department, says two people were extricated from the vehicles and suffered critical injuries.

By about 8 a.m., one southbound lane of Route 4 had reopened and one remained closed.

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