(CNN) — Traces of explosive material were found on the remains of the victims of the EgyptAir Flight 804 crash, the Egyptian investigation committee announced on Thursday, citing a forensic report. The Airbus A320 crashed into the Mediterranean in May 2016, killing 66 people.
Egyptian officials previously had said a terror attack or technical failures could have downed the plane.
Details have been emerging about the doomed flight for months as investigators tried to piece together what caused the crash.
A senior source from the airline told CNN in July that the plane’s cockpit voice recorder indicated there was a fire onboard — and an attempt to put it out — before the aircraft plunged into the sea.