Four people have tested positive for for bird flu after an outbreak of the virus on a north Wales farm, the Health Protection Agency confirmed today.

Dr Pat Troop, chief executive of the Health Protection Agency, has said Mr Litvinenko's death was an "unprecedented event in the UK" and that he had "apparently been poisoned by a type of radiation".

Fears of a terror attack on Britain were heightened today following the discovery of what appears to have been a makeshift laboratory for concocting the deadly poison ricin.

SIX terror suspects were being questioned by Scotland Yard detectives last night after traces of the deadly poison ricin were discovered.

Six terror suspects were being questioned by detectives today after traces of the deadly poison ricin were discovered, Scotland Yard said today.