12:50 p.m. Update: University Boulevard is open, according to Montgomery County police. Authorities identified the victims killed at the scene of the 3 a.m. single-vehicle accident as driver Jenice Richards, 22, of the 6800 block of Highview Terrace, and the rear seat passenger, Tamara Nicole Johnson, 19, of the 7300 block of Riggs Road, both in Hyattsville.

Hospitalized after the crash is front seat passenger Desaleen Rayna James, 18, of the 8200 block of New Hampshire Avenue, Silver Spring.

Police said the women’s black 2003 Nissan Murano was eastbound in the 600 block of University Boulevard East near Langley Drive when it left the road and stopped after hitting a brick retaining wall of a home at 611 University Boulevard East.

Witnesses to the accident may remain anonymous but are asked to call the department’s Collision Reconstruction Unit at 301-840-2435.

11:30 a.m. Update: Two of the eastbound lanes have reopened.

10:15 a.m. Update: Traffic has been detoured onto East Franklin Avenue to Flower Avenue to Piney Branch and back to University.

5:50 a.m. Update:The westbound lanes have reopened. However, the eastbound stretch remains closed as police investigate the earlier accident.

Original post: University Boulevard at Piney Branch Road is expected to be closed for several hours this morning while police investigate a fatal accident.

The accident in Silver Spring was reported shortly after 3 a.m. Footage from the scene shows a vehicle mangled on a brick retaining wall adjacent to the street. Authorities report that two young women were killed, and another was injured.

It was the second fatal accident in the county in just over 12 hours. The driver of a pickup truck was killed in Bethesda Wednesday afternoon after he crossed a median and struck a Metrobus, police said. The bus driver was seriously injured.

— Michael D. Bolden

Check back for details.