Far-right extremists are posting videos on the internet in which they threaten to kill British Muslims, The Sunday Times reported.

In the videos, posted in August on YouTube, an American-based open-access website, three men, wearing a black terrorist-style mask and carrying guns, knives and clubs, call on all Muslims to leave Britain or be killed.

According to the Times, one of the extremists in the films appears to be a British soldier who has served in the Gulf.

In one video, dated August 19, a man with a Welsh accent tells Muslims to “go home” or be burnt alive.

Carrying a foot-long hunting knife, he threatens: “I’ll cut your head off.”

Another video shows a man saying he has “comrades” across Britain who have “had enough”.

“I wish to know what we are going to do to fight the so-called religion of peace known as Islam,” he says, adding that killing Muslims would remind him of being “back in the Gulf”.

YouTube users are advised before watching the videos, each lasting two to three minutes, that the films “may contain content that is inappropriate for some users”. Viewers are also required to state they are over 18, although there can be no verification of this.

All the films have been made after the arrest of 23 suspects in connection to an alleged “terror” plot to blow up U.S.-bound planes that the British government said it foiled three weeks ago.

The videos’ style is like other films shot by militants in Iraq threatening to kill foreign nationals, the Times said.

British Muslim leaders say the release of the films is worrying because recent reports show a rise in the number of attacks on mosques in the United Kingdom.

Massoud Shadjareh, chairman of the Islamic Human Rights Commission, said that the videos were extremely worrying.

”There is no question there has been an increase in attacks on mosques and Muslims,” he said.

Gerry Gable, publisher of the anti-fascist magazine Searchlight, said the threats made in the videos must be taken seriously.

“Currently there is a campaign by members of parliament to shut down Nazi websites, so it is very disheartening to find a reputable company like YouTube.com playing host to people advocating terrorism,” he said.