James Monroe Henderson, Aayoni Williams killed, one other seriously injured, after SUV crashes through overpass guardrail to the road below.

A man and a woman, identified as Aayoni Williams 30, and James Monroe Henderson, 45, were killed and another man was injured when their SUV barreled off an overpass in the Oxon Hill area of Prince George’s County and crashed to the roadway beneath it, authorities said.

The crash occurred about 2 a.m. A Prince George’s County police spokesman, said the SUV’s driver lost control as he headed north on the Indian Head Highway to Oxon Hill Road.

A man who was driving the SUV and a woman in the vehicle were killed, and another man in the SUV suffered injuries not thought to be life-threatening, Bond said. He said investigators were still working to determine what prompted the driver to lose control.

Police did not immediately identify those killed because their family members had not yet been notified of their deaths.