6:55 p.m. Update: State officials report that the parkway has reopened.

6:48 p.m. Update: One person was killed Tuesday afternoon in a car crash on the Baltimore-Washington Parkway in Prince George’s County, authorities said.

The crash occurred around 2:30 p.m. in the southbound lanes of the Parkway south of Route 450, in the Bladensburg area, a county fire department spokesman said.

Original post: The Baltimore-Washington Parkway is closed south of Route 450 following an earlier accident.

According to state transportation officials, both travel lanes and the left shoulder are closed.

Police are investigating.

Check back for details.