Pakistani intelligence agencies have helped the British authorities foil a terror plot to blow up several passenger planes flying to the United States from Britain, local newspaper and TV channel reported on early Friday.

"The arrests in the United Kingdom have followed active intelligence cooperation between Pakistan, the United Kingdom and the United States," said Tasnim Aslam, spokesperson of Pakistani Foreign Office, late Thursday night, quoted by the newspaper The News.

The Pakistani agencies have been working closely with British anti-terror police, monitoring "for some time" the activities of suspected terrorists, Aslam said.

"All of whom are British nationals," according to local GEO Television.

Authorities mad some arrests in Pakistan, which were coordinated with the arrests in Britain, said the media reports.

"In fact Pakistan, played a very important role in uncovering and breaking this international terrorist network," the spokesperson said, quoted by The News, but she didn't elaborate on who had been arrested in Pakistan.

According to earlier reports, British police arrested 21 people in connection with the plot to blow up several flying over the Atlantic Ocean with liquid explosives held in hand-luggage.

The actions already taken in London were made possible only with the close cooperation between Pakistani and British intelligence, and Pakistani intelligence cooperated and provided vital information that led to these actions, an unidentified Pakistani security official said, quoted by the News.

(Xinhua News Agency August 11, 2006)