13:51 11 February 2014
An Iraqi bomb instructor has accidentally killed himself and 20 of his students when he mistakenly set off a car bomb during a bungled training session in Iraq.
The explosion took place near the town of Samara, 60 miles north-west of Baghdad.
Security forces assessed the site and arrested 22 survivors, some of whom were wounded.
They also recovered seven fully prepared car bombs along with suicide belts packed with high explosives.
The instructor, who was not named, was an experienced operative who specialised in training and recruitment. He is affiliated with ISIS, the Islamic State of Iraq and Syria, which ran the camp where the accident took place. The group also operates over the border of Syria and controls areas of Anbar province in Western Iraq.