The father of one of the victims of the Bataclan attacks in Paris has described how he and the father of one of the perpetrators became friends.
130 people were killed in the multiple shootings and bombings which took place across the French city on November 13th, 2015.
The attacks were carried out by Islamic State (IS) militants.
At the Bataclan theatre, 90 people were killed by gunmen during a rock concert.
Among the victims were 28-year-old Lola, whose father Georges Salines has written a book with the father of one of the killers.
Azdyne Amimour's son Sami was one of the perpetrators involved in the massacre and was also killed
Georges, co-author of 'We Still Have Words', told The Pat Kenny Show how the book depicts two fathers coming to terms with terror.
His daughter Lola was "a very young, dynamic Parisien" who "had many, many friends".
An editor of books for children and teenagers, she "absolutely loved her work and loved to travel", according to her father.
Georges said he and his wife were not aware their daughter was going to a concert at the Bataclan that night.
He said they went to bed not knowing that the attack was taking place, and were awoken by a call from their eldest son.
"He told us that Lola was at the Bataclan that Paris was experiencing several terrorist attacks, including at the Bataclan."
They were told that the police operation was over and all hostages had been freed, yet their son could not reach Lola.
Georges said: "It was a worry, of course, it was a real shock for us.
"In the middle of the night, we didn't lose hope, we were almost certain that she couldn't be dead, we were almost certain she was alive.
"We went looking for her for the next 18 hours."
The memorial of the victims of the Paris attacks after the remembrance ceremony held in front of the Bataclan. Photo by Daniel Derajinski/ABACAPRESS.COMGeorges said that in the days following the discovery that Lola had been killed, the overwhelming feeling he experienced was "one of absurdity".
"I thought it was totally absurd that someone would kill my daughter for political reasons.
"Also I wondered what goal could be achieved by such a massacre, I still wonder about it.
"Fortunately, the terrorists cannot win, the only victory for them would be if our countries started to panic and to take counterproductive measures."
The Pat Kenny Show
We Still Have Words
Georges met Azdyne Amimour for the first time in January in 2017.
He said: "Azdyne had heard about me and heard I was someone who was willing to address the problem of terrorism.
"He chose to meet me because he thought I would be willing to hear him, and he was right."
The pair's first meeting was "extremely moving and interesting" and they stayed in touch, coming together on several occasions after that.
Georges said Sami was a "very normal" and had no obvious problems or fundamentalist leanings which would suggest he was capable of taking part in terrorism.
Sami started praying intensely at 15 and radicalised himself, according to Georges, before travelling to Syria to join the Islamic State at the age of 26.
Sami could not be persuaded by his father to come home from Syria, and Azdyne blames himself in some ways for how his son turned out.
Georges said: "He always wondered what did I do wrong because he doesn't see it clearly.
"Maybe he made some mistakes but they were honest mistakes.
He added that he hopes that the book will contribute to a conversation about how the channels of communication need to be opened about how certain groups may feel marginalised in society.
He said: "We have to stay in contact with our Muslim people to make them feel like part of our nation."
