Cairo: Human remains retrieved from the crash site of EgyptAir flight 804 suggest there was an explosion on board that may have brought down the aircraft in the east Mediterranean, a senior Egyptian forensics official said on Tuesday.

"The logical explanation is that an explosion brought it down," the official told The Associated Press. The official, who is part of the Egyptian team investigating the crash that killed all 66 people on board the flight from Paris to Cairo early last Thursday, has personally examined the remains at a Cairo morgue. He spoke on condition of anonymity because he was not authorised to release the information.