Previously released information by the State Police said Mann and Washington got into a physical altercation early that morning before Mann discharged his service weapon, striking Washington.
Washington was later pronounced dead at a local hospital.
The State Police said earlier that the incident took place near the intersection of Main and Cherry streets. Mann, according to the State Police, was traveling west on Main when he saw an altercation among multiple individuals.
As Mann reportedly turned his vehicle around to investigate, Washington reportedly left the scene on foot in "a hurried manner," according to the State Police. Mann reportedly gave verbal commands that were disregarded before he and Washington got into a physical altercation.