CAROL LIN, CNN ANCHOR: Now turning to the investigation in Paris: Serious, unanswered questions face aviation investigators poring over the wreckage of the Concorde. Mechanical failure as well as human error are the focus of their probe. CNN's Tom Mintier is in Paris -- Tom.</s>TOM MINTIER, CNN CORRESPONDENT: Carol, the investigators have released this initial report. And it should be pointed out it is initial, not even preliminary. A preliminary report may not come out for another month. But it seems the focus of the investigation is pointing towards the Concorde tires and the engines on the left side of the aircraft. Investigators say they have found debris along the runway path leading up to the crash site, and they have found tires on the runway -- portions of the tires. Now this may be important. The Concorde has a history of blowing tires not just on landings, but on takeoffs as well. Back in '79, there was a similar incident at Dulles International Airport where the tires protruded through the wings on liftoff after they had exploded and fuel was spilling out of the fuel cells that are located in the wing. This is a similar incident, but investigators are using the data from the flight data recorders trying to determine the engine performance. But the wheels would not go up, something the reporter -- the pilot reported, and the investigation is centering on aircraft maintenance, on those left two engines and the afterburners and a fuel pump that may have been replaced, and the tires. Later this afternoon, there will be a silent March from the village of Gonesse, that was narrowly missed by the Concorde, to the crash site. That will happen about 4:30 local time here in Paris, just about 14 minutes before on Tuesday that the Concorde went down. So the investigation is really in its preliminary stages. But when you read the newspapers here in Paris, everyone is looking for the cause. Everyone has questions, but they are very few answers. I'm Tom Mintier, CNN, reporting live from Paris.
Concorde Crash: Investigators Focus on Mechanical Failure, Human Error