Prince George’s County police are investigating a fatal collision early Saturday involving a pedestrian, officials said.

       The collision took place in the 7900 block of Woodyard Road. At about 2 a.m. Saturday, officers discovered an unresponsive adult male laying in the roadway. The man was pronounced dead on the scene.

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       The driver of the vehicle that struck the man remained on the scene and was cooperating with investigators, police said. The roadway was closed for a time, but has since reopened.