Be advised that state police are investigating a single-vehicle fatal crash that shut down the Southern State Parkway near Exit 41A.

The 10:20 a.m. wreck left two people dead and two others injured, police said. The parkway westbound is closed at Exit 41A, with traffic being diverted to the northbound Sagtikos State Parkway.

State police advised drivers to avoid the area.

This is a developing story. Check back for updates.