The Islamic State group, also known as ISIS, released a new video showing five children executing prisoners in Syria’s Raqqa province, SITE Intelligence reported Friday. The intel group identified one of the children as British who appears to be a pre-teen.

The nationalities of the other alleged child executioners are Egyptian, Kurdish, Tunisian and Uzbek, SITE said. In the video, the British boy is captioned Abu Abdullah al-Britani. This the same name taken by another British ISIS fighter, Assad Uzzaman from Portsmouth, who died in Syria last July.

The nine-minute long video shows all children in military uniforms and black head covers targeting the five kneeling hostages identified as “atheist Kurds” and “spies.”

A Tunisian child executioner, identified in the video as Abu al-Bara’a al-Tunisi, reportedly said: “To the atheist Kurds, what is between me and you are days during which the hair of young children turns grey. The war with you has yet to begin. Neither America, France, Britain, nor Germany will benefit you.”

ISIS is known to have been recruiting children as fighters and making them carry out brutal acts. About 12 child executioners have reportedly appeared in the militant group’s propaganda video so far.

In July, German-language weekly Der Spiegel estimated that 1,500 male children are working with ISIS in Iraq and Syria. The extremist group reportedly increased the use of child fighters in their videos after U.S.-led airstrikes against ISIS in 2015.