John Wadham, director of Liberty:

"Since September 11th, draconian anti-terrorism powers have been used to justify a string of high-profile arrests of people who have then been found to have done nothing wrong. It's a real problem both for the integrity of our criminal justice system and for the confidence of Britain's Muslims, who have been the target of most of these arrests.

"As regards this particular case, Liberty is of course opposed to people being trained in the use of lethal weapons - but the fact remains that offering such training in the USA is legal".