A woman was struck by two vehicles and killed Saturday night in Prince George’s County, authorities said.

The woman was hit first by a tow-truck and then by a second vehicle when she stepped into University Boulevard in the Langley Park area, Prince George’s County police said.

The incident occurred near Riggs Road about 8:40 p.m., said Cpl. Larry Johnson, a county police spokesman.

He said the second vehicle apparently did not remain at the scene.