The TBI is investigating a fatal officer involved shooting last night (Saturday, August 15, 2020) in Oak Ridge. Police responded to a report of a person needing assistance in the 100 block of Briar Road. When they arrived, they found 41-year-old Fred John Henry Arcera armed with two knives. Arcera reportedly came after authorities with the weapons, resulting in three officers firing shots, killing him. The TBI did not release any further details.