WASHINGTON — Two adults and two children are in the hospital after a four-car crash in Prince George’s County, with one of the children in critical condition.

It happened just before 7 p.m. off Suitland Parkway near the Naylor Road Metro station.

The eastbound side of the parkway was closed for several hours.

Below is the area where the crash happened:

[google_map latitude=”38.852170″ longitude=”-76.957375″ zoom=”13″ height=”300px” location_label=”Suitland Parkway crash”]

Police are investigating what caused the crash.

Watch NBC Washington’s coverage: