The main defendant in the trial over the November 13th 2015 Paris attacks has denied killing or hurting anybody, reports BBC News.
Prosecutors say Salah Abdeslam, 32, is the only surviving member of the IS cell that targeted Paris that night, killing 130 people.
In court on Wednesday, he restated his support for the Islamic State group, but said he chose at the last minute not to detonate his explosives.
Salah Abdeslam is the only defendant to be directly accused of murder.
Prosecutors believe his suicide belt malfunctioned before he escaped, but Abdeslam said he had changed his mind.
"I wanted to say today that I didn't kill anyone, and I didn't hurt anyone. Not even a scratch," he said in a sudden outburst before being cross-examined in court for the first time.
He told the court the attacks were carried out to force an end to France's military involvement in Syria and Iraq.
In total, 20 people are on trial. Only 14 defendants are present - the remaining six are being tried in absentia.
A spokesperson for the families of those who died said they don't expect to ever understand the motivation.
"When I look at him, it's just a feeling of incomprehension. How could he do what he did, what they did?" Philippe Duperron, whose son was killed at the Bataclan concert hall, told France 2 television.
The attacks took place on November 13th 2015 when a 10-man squad of heavily armed jihadists targeted several sites across Paris.
Nine of the attackers either blew themselves up or were shot dead. French-Moroccan Salah Abdeslam is thought to be the last survivor of the group.
It is believed that he travelled to Paris from his home in Brussels along with the other attackers and was intending to blow himself up. Why he failed to do so - technical malfunction or a last-minute change of mind - is a key question the victims' families want answered.