A coach carrying members of a pensioners' club on an excursion collided with a lorry and burst into flames yesterday near the village of Puisseguin, among the vineyards of the Saint-Emilion area near Bordeaux, plunging southwest France into mourning.
President Francois Hollande's office said he will lead a memorial on Tuesday for those killed in France's deadliest crash since 1982, in the tiny nearby village of Petit-Palais-et-Cornemps, where many of the victims came from.
Officials said the identification process could take up to three weeks.
Four bodies -- those of the lorry-driver and his three-year-old son as well as two of the bus passengers -- were removed from the wreckage and transferred to a morgue in Bordeaux.
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At the scene of the collision, around 20 investigators in white overalls pored over the remains of the two vehicles. More specialists are expected to arrive on Monday to probe the crash, including why the fire spread so quickly.
One survivor told today of the horrifying speed with which the blaze took hold, and of the desperate efforts to rescue people from the burning vehicle.
"The fire broke out straight away -- it was like lightning," retired carpenter Jean-Claude Leonardet, 73, told Le Parisien newspaper.
"We went back to pull two people who were trapped on the stairs and couldn't get out. We couldn't go back there -- the fire and the smoke were overwhelming."
In the absence of bodies, 43 white roses were laid out at the local mortuary in symbolic tribute to the victims.
But Ghislain Rety, police colonel in the Gironde region, warned it was in a "very, very damaged state".
"It's too early to say if it will be usable," he said.
The wreckage of both vehicles will also be examined to try to establish the circumstances of the crash.