More time to quiz 'PM threat' man

Police investigating an alleged threat to kill Prime Minister Gordon Brown have been granted seven days to quiz a 24-year-old man arrested in Blackburn.

Five people are now in custody as part of the operation, including another man, 29, arrested on Tuesday in Derby.

Three other men were arrested on 14 August at Manchester Airport and in Accrington.

The arrests followed alleged threats against the prime minister and Tony Blair in January.

The 24-year-old arrested in Blackburn is thought to be a Muslim convert.

The Derby man was arrested at Moore Street, in the Normanton area.

Earlier, a police spokesman said: "A search of the address in Derbyshire is under way and is expected to take several days."

Greater Manchester Police Counter Terrorism Unit and Lancashire Constabulary are conducting the probe.

The threats against the prime minister and his predecessor were made on a recognised jihadi website, by a group calling itself "al-Qaeda in Britain".