Damascus:The Daesh Takfiri group has released a new video purportedly showing execution of five “British spies” in Syria, with the terrorists calling Prime Minister David Cameron an “imbecile.”

The 10-minute video, posted online, showed the five men in orange jumpsuits introducing themselves in Arabic and “confessing” to spying for the United Kingdom by filming and photographing sites in exchange for money within Syria’s northern city of al-Raqqah, the Takfiris’ de facto capital.

After that, the video showed the alleged spies, aged between 25 to 40 years old, kneeling on the ground in a desert location, with five masked executioners standing behind them, each with a hand gun. The middle executioner, then, began delivering a propaganda rant in a British English accent, addressing the UK premier.

He called Cameron a “slave of the White House” and mocked him as he dared “to wage war against” Daesh with “a handful of planes” and threatened him over the UK’s campaign in Syria.

Then, executioners shot their guns in the victims’ heads, apparently killing all five. The video ended with a small boy, dressed in an army uniform, shouting “We will kill infidels over there,” pointing into distance.

They have so far released several similar video clips showing the execution of captives from different countries, including Egypt, the United States, Britain, and Japan. The hostages, including aid workers and journalists, were usually dressed in orange jumpsuits, reminiscent of the ones inmates wear in US prisons set up for holding “terror” prisoners.

In another development, the so-called Syrian Observatory for Human Rights said on Sunday that Arab and Kurdish forces managed to kill at least 16 Daesh militants and wound 19 others during fierce clashes north of the of Raqqah.

Syrian forces have been battling militants, particularly Daesh terrorists, on different fronts throughout Syria since March 2011, when the foreign-sponsored militancy, which has claimed over 250,000 lives, plagued the Arab country.