'Irish postmark' on suspect packages sent to UK armed forces offices

An Army careers office in Canterbury

Suspected explosive devices sent to armed forces recruitment offices bear "hallmarks of Northern Ireland-related terrorism", a Number 10 spokeswoman has said.

One of the suspicious packages was stamped with a Republic of Ireland postmark but no specific group has claimed responsibility for the attack, sources told the Press Association.

Prime Minister David Cameron chaired a meeting of the Government's Cobra emergencies committee to discuss the suspicious parcels, which sources said were "crude" in design but "could have caused injury to others".

A Number 10 spokeswoman said: "Seven suspect packages have been identified as containing small, crude, but potentially viable devices bearing the hallmarks of Northern Ireland-related terrorism.

"These have now been safely dealt with by the police and bomb disposal units.

"Guidance has been issued to staff at all military establishments and Royal Mail asking them to be extra vigilant and to look out for any suspect packages and the screening procedures for mail to armed forces careers offices is being reviewed.

"The national threat level remains under constant review."

Four parcels were discovered at army careers offices in Oxford, Brighton, Canterbury and the Queensmere shopping centre in Slough today, counter-terrorism police officers said.

One package was found in Aldershot, Hampshire, yesterday, while two packets were found on Tuesday at the armed forces careers office in Reading, Berkshire, and the Army and RAF careers office in Chatham, Kent, the South East Counter Terrorism Unit (Sectu) said.

British Ministry of Defence bomb disposal units were called, although this is routine with any suspect package.

The official threat level for Northern Ireland-related terrorism is set separately for Northern Ireland and Great Britain, that is, England, Wales and Scotland.

In Northern Ireland it is "severe" and in Great Britain "moderate", meaning an attack is possible, but not likely.

James Brokenshire MP, who recently took on the post of immigration minister but was previously security minister, was present at the Cobra meeting, which is also likely to have been attended by intelligence chiefs as well as Government officials and senior police officers.

Detective Superintendent Stan Gilmour, of Sectu, earlier said: ''The contents of the packages are suspicious in nature and will now be sent off for forensic examination.

''Even if the contents are determined to be a viable device, they pose a very low-level threat and are unlikely to cause significant harm or damage.

''When a suspect package is reported we have a routine response which means we may need to evacuate the area if necessary until we can be sure it poses no threat to the public.

''While this can cause concern and disruption for local communities, it is a necessary precaution until we know what we are dealing with.''

Advice has been sent to the Royal Mail and to the Ministry of Defence to ensure that staff ''remain vigilant'', Sectu added.

The Queensmere shopping centre in Slough was temporarily evacuated, while cordons were placed close to all offices where packages have been found.

A British Ministry of Defence spokesman said security advice has been reiterated to its personnel, while the Royal Mail said it was co-operating with the police investigation.

It is understood that a suspected package found at RAF Mildenhall in Suffolk was a false alarm and is not related to the investigation at the armed forces recruitment offices.

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