Three people in their 20s were killed and another critically injured early Sunday in Anne Arundel County when the car they were in left a highway and crashed into a light pole and two trees, county police said.

Based on an initial investigation, the crash occurred about 12:40 a.m. as the car headed south at high speed on Piney Orchard Parkway in the Odenton area, police said. It failed to negotiate a curve near Riverscape Road.

The three dead were identified as the driver, David M. D’augustine, and passengers Samuel C. Schindler and Katherine M. Warrington. All were 22 years old and from the Odenton area.

The injured passenger, identified as Michael L. Phillips, 23, of Gambrills, was flown to the Maryland Shock Trauma Center by helicopter, police said.

Police said “excessive speed” appeared to be a factor in the crash.