Prosecutors in the UK investigating the case of poisoned Russian spy Alexander Litvinenko will make an announcement today, the Crown Prosecution Service (CPS) said.

BRITISH police arrested six men in pre-dawn anti-terror raids yesterday.

The terrorist threat facing the UK is "very high indeed", UK Home Secretary John Reid said today.

The offices of an exiled billionaire were sealed off tonight as police investigating the death of former Russian spy Alexander Litvinenko found traces of a deadly radioactive substance.