A Waldorf man was hit by an SUV and killed Monday in a possible drunk-driving crash, authorities said.

Eugene Newman, 49, was walking along Route 5 near Accokeek Road about 7:20 p.m. when he was struck by an SUV traveling south, Maryland State Police said. It remains unclear whether Newman was in the roadway or on the shoulder, but troopers took the SUV’s driver into custody on suspicion of DUI, State Police said.

State Police did not immediately identify the driver, and they said formal charges had not yet been filed.