Three people — two women and a man — are dead, and a fourth person is in critical condition after their SUV collided with a snowplow in Montgomery County, Maryland, Monday night.

The crash happened before 6:45 p.m. on Columbia Pike at Briggs Chaney Road in the White Oak/Burtonsville area, near the Burtonsville Volunteer Fire Department Station.

A preliminary investigation shows that the vehicle contained only four adults. The surviving passenger, a man, was taken to an area hospital.

Police have not released the identities of those who died in the crash.

Montgomery County police spokeswoman Shiera Goff told WTOP investigators are still at the scene.

Below is a map of where the accident occurred. [google_map latitude=”39.08425268764257″ longitude=”-76.95108127346998″ zoom=”14″ height=”300px” location_label=”” dynamic_map=”false”]

This is breaking news. Stay with WTOP for the latest.