London, Sep 2 : A fourth man has been charged with possessing terrorist material following an investigation into an alleged threat to assassinate British Prime Minister Gordon Brown.
Muhammad Ali Mumtaz Ahmad, 24, from the Whalley area of Blackburn, is due to appear before Westminster Magistrates Court in London on Tuesday.
He is jointly charged with Abbas Iqbal, 23, and Ilyas Iqbal, 21, who were previously remanded in custody.
Police have been given more time to quiz a fifth man, arrested in Derby, the BBC reported.
Ahmad was arrested on August 26 as part of a counter-terrorism operation involving Lancashire and Greater Manchester Police.