"We have a thousand questions and we expect answers," said Georges Salines, head of one of several victims' associations represented yesterday at the first of a series of hearings to be held over coming weeks.
Salines, a doctor, said he learned of his daughter's death at the Bataclan concert hall the day after the massacre there of 90 people at the hands of jihadist gunmen.
The commission of enquiry was set up at the request of the conservative opposition Republican party to look into the Socialist government's efforts to counter the terror threat since the previous set of attacks to rock France -- the assault in January 2015 that began with the killings at the Charlie Hebdo satirical weekly and ended with 17 dead over three days.
The total number of victims from the November attacks, including those left with emotional scars, is estimated at 4,000, according to the commission.
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Many told how they had learned of the death of a loved one only three days later, while others complained of saturated phone lines and employees' "shameful" behaviour at the main Paris morgue, which was overwhelmed.
Sophie Dias recalled that she was told when she came to identify her father at the morgue: "Don't worry, if you don't see the head you'll see a foot."
Still others questioned French intelligence services.
"How could a terrorist who was barred from France and Europe manage to direct an attack of such magnitude?" asked Mohamed Zenak, the treasurer of another victims' association. He was referring to the suspected ringleader of the attacks, Abdelhamid Abaaoud, who was killed in a police raid on November 18.