A woman has been injured by a letter bomb which exploded at the main DVLA centre in Swansea, the fourth mail blast incident in five days.
A woman has been injured by a letter bomb which exploded at the main DVLA centre in Swansea, the fourth mail blast incident in five days.
The attack, at about 0930 GMT, is the third of its kind on motoring-related companies this week.
The attack, at 0923 GMT, is the third of its kind on motoring-related companies this week.
The bomb exploded in the post room of the Driver and Vehicle Licensing Agency. The injured woman is stable.
A Berkshire accountancy firm was hit on Tuesday, and the London congestion charge operator Capita on Monday.
Kent police are also investigating a letter bomb which injured a man at his Folkestone home on Saturday.
Police are also investigating a letter bomb which injured a man at his home in Folkestone, Kent, on Saturday.
Officers are trying to establish whether there is any connection between the three other attacks and the letter bomb received by the 53-year-old man, who suffered minor injuries.
The specialist National Domestic Extremism Unit is trying to establish whether there is any connection between the three attacks on offices and the letter bomb received by the 53-year-old man, who suffered minor injuries.
An accountancy firm in Berkshire was targeted on Tuesday, and the central London offices of Capita on Monday.
The woman injured in the post room of the Driver and Vehicle Licensing Agency was involved in "a small letter-type explosion", South Wales Police said.
A South Wales Police spokeswoman said the woman who had been injured at the DVLA had been involved in "a small letter-type explosion" at about 0923 GMT and had been taken to hospital.
Morriston Hospital, where the woman was taken, said in a statement she was in a stable condition.
In a statement, Morriston Hospital, where the injured woman was taken, said: "She is undergoing treatment at the present time and has been assessed by a consultant. Her condition is stable."
I've got no doubt whatsoever that the police are desperately trying to think about who the perpetrators might be Peter Power, former senior officer at Scotland Yard
A cordon has been put in place around the scene and access roads have been closed.
"She is undergoing treatment at the present time and has been assessed by a consultant," the statement said.
But police said the DVLA building and surrounding areas had not been evacuated so far.
A cordon has been put in place around the scene of the DVLA blast and access roads have been closed.
But police said the building and surrounding areas had not been evacuated so far.
Investigation
Investigation
On Tuesday a package exploded at the Berkshire offices of an accountancy firm linked to Speed Check Services, based in Camberley, Surrey, the provider of digital speed cameras to the police.
On Tuesday a package exploded at the Berkshire offices of an accountancy firm linked to Speed Check Services, based in Camberley, Surrey, the provider of digital speed cameras to the police.
MAIL-BOMB LOCATIONS 1 Folkestone, Kent - 3 Feb 20072 Capita, London - 5 Feb 20073 Vantis, Wokingham, Berks - 6 Feb 20074 DVLA, Swansea - 7 Feb 2007
MAIL-BOMB LOCATIONS 1 Folkestone, Kent - 3 Feb 20072 Capita, London - 5 Feb 20073 Vantis, Wokingham, Berks - 6 Feb 20074 DVLA, Swansea - 7 Feb 2007
That followed a letter bomb attack the day before at the central London offices of Capita, which runs London's congestion charge system.
That followed a letter bomb attack the day before at the central London offices of Capita.
In a separate incident on Wednesday, a controlled explosion was carried out on a package found on a road in Havant, Hampshire.
Peter Power, a former senior officer at Scotland Yard, told the BBC the police would be looking at whether a "disgruntled" motorist could be behind the attacks.
Peter Power, a former senior officer at Scotland Yard, told the BBC that the police would be looking at whether they were dealing with a "disgruntled" motorist.
"I've got no doubt whatsoever that the police are desperately trying to think about who the perpetrators might be," he said.
"I've got no doubt whatsoever that the police are desperately trying to think about who the perpetrators might be," he said.
"Are they trying to draw attention to a cause, are they or is he or is she just a very disgruntled motorist. So there is some connection and the police I'm sure will be trying to find that out."
"Are they trying to draw attention to a cause, are they or is he or is she just a very disgruntled motorist? So there is some connection and the police I'm sure will be trying to find that out."
Nigel Humphries, from the Association of British Drivers, told BBC Five Live that he was "appalled" by the apparent bombing campaign.
Nigel Humphries, from the Association of British Drivers, told BBC Radio Five Live he was "appalled" by the apparent bombing campaign.
He added: "In fact, it makes us feel a bit guilty that we haven't campaigned hard enough on the legitimate front against the things that we oppose, to do with criminalising and bullying motorists and because of our failure to campaign hard enough, somebody's had to resort to this."
He added: "In fact, it makes us feel a bit guilty that we haven't campaigned hard enough on the legitimate front against the things that we oppose, to do with criminalising and bullying motorists and because of our failure to campaign hard enough, somebody's had to resort to this."
'Worrying'
'Worrying'
Home Secretary John Reid described the incidents as "worrying".
Home Secretary John Reid described the incidents as "worrying".
But he added: "It is important we allow police to get on with their investigation without undue speculation."
But he added: "It is important we allow police to get on with their investigation without undue speculation."
Alun Cairns, Welsh Conservative Assembly Member for South Wales West, sent his "sympathy and best wishes" to the injured DVLA worker.
Alun Cairns, Welsh Conservative Assembly Member for South Wales West, sent his "sympathy and best wishes" to the injured DVLA worker.
He said he planned to set up meetings with the DVLA, police and staff to discuss "protecting personnel in the workplace".
He said he planned to set up meetings with the DVLA, police and staff to discuss "protecting personnel in the workplace".
In a separate incident on Wednesday, a controlled explosion was carried out on a package found on a road in Havant, Hampshire.
Police said they were not linking this with the other four letter bombs.
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