A woman riding a bicycle was killed Thursday morning after being struck by a car in Montgomery County, police said.

The crash occurred around 6:50 a.m. on MD 108/Olney Laytonsville Road near Zion and Brookeville roads in Olney.

Police said the driver of the car that hit the victim, a woman, stayed at the scene following the incident. The victim’s identity has not been released.

The crash scene remains under investigation and has tied up traffic in the area. MD 108 is blocked in both directions and authorities warn drivers to expect delays.