A 20-year-old Maryland man was killed Thursday in a crash on Route 50 in Lanham.

The incident happened around 7:30 p.m. in the HOV lane of the roadway, also known as John Hanson Highway, just before Route 704.

Maryland State Police said a Nissan car was speeding and swerved across lanes. The driver lost control, and the car hit a tree then a barrier wall. The driver and another passenger in the front seat survived and were treated for some injuries at a hospital.

Police said Robert Antonio Flowers of Mitchellville died. He was riding in the back seat and was not wearing a seat belt, police said. Authorities said they did not know at this time if the others in the car were wearing seat belts.

Alcohol was not a factor in the crash, police said.