In one of the videos, a fighter displays his wristwatch to the camera, showing the date as 25 October - and repeating it out loud - the date of the massacre in al-Seriha.

While it's still possible that it could repeat that feat, it's up against some extremely tough competition.

Whatever their reasons for not responding, as the Saudis claim, to the repeated warnings about his extremism, he was clearly a danger to his adopted host country.

I've been lucky, and I've tried not to repeat myself too much, and like you say, I can do musical stuff.

The detectives, he said, “kept repeating the story of the crime to me. I was frustrated and tired of the situation.”