2 More Arrested in British Bomb Plot

GLASGOW, Scotland -- Police announced two new arrests Monday in the failed terrorist attacks at Glasgow's airport and in London, as security forces pored over thousands of hours of surveillance video and evidence from suspects' houses and vehicles.

British officials have said they are hunting for what they called an al-Qaida-linked network behind the attempted terrorist attacks, and information also emerged suggesting that two of the suspects may be doctors working in Britain.

The intense hunt comes at a time of already heightened vigilance less than a week before the anniversary of the deadly July 7, 2005, London transit bombing. Those were carried out largely by local Muslims, exacerbating ethnic tensions in Britain.

In the latest attacks, two car bombs failed to explode in central London on Friday, and two men rammed a Jeep Cherokee loaded with gas cylinders into the entrance of Glasgow International Airport on Saturday.

The unidentified driver of the Jeep, which burst into flames, is being treated for serious burns at a hospital in Glasgow, where he is under arrest by armed police. A 27-year-old man also was arrested at the airport and was being held at a high-security police station in Glasgow.

It appeared that authorities had been close on the trail of the airport bombers before the attack. Rental agent Daniel Gardiner, whose company leased a Glasgow-area home searched by police, said authorities contacted his firm just ahead of the airport attack, saying they had tracked phone records from it linked to the foiled London car bomb attacks.

Security in London was highly visible Monday, with long lines of cars forming behind police checkpoints on the London Bridge. Concrete barricades were in place protecting the Wimbledon tennis tournament.

Police in Glasgow said Monday that two more men were arrested the day before in the airport bomb attack investigation, bringing the total number of suspects in custody to seven.

Strathclyde police said the two men, aged 25 and 28, had been detained under the Prevention of Terrorism Act.

"This continues to be a fast-moving investigation," said the assistant chief constable, John Malcolm.

Police have declined to identify any of the suspects, but British television and newspapers widely identified one as Mohammed Asha, a doctor working at the North Staffordshire Hospital, near the Midlands town of Newcastle-under-Lyme, where the police searched a house Sunday. The hospital refused comment.

The man was arrested along with a 27-year-old woman when the police pulled over a car in a dramatic operation on the M6 highway in northwest England late Saturday.

In Jordan, Asha's brother Ahmed said he had heard the reports and said his 26-year-old sibling "is not a Muslim extremist, and he's not a fanatic."

Gardiner, an official at the Let-It house rental agency in Glasgow, said police contacted his company Saturday afternoon, just minutes before the airport attacks.

"A card was put through my colleague's door, asking if we would contact them," he said.

The colleague found the note 10 minutes before the airport attack, Gardiner said.