A doctor at the Royal Alexandra Hospital in Glasgow, who refused to give his name, said he recognized Asha as a doctor who also kept an office there. The hospital would not confirm that.

In Amman, Jordan, Asha's father, Jamil, denied his 26-year-old son had any terrorist leanings.

"My son is a moderate Muslim and carried out his religious duties, but he never embraced fanaticism," he told The Associated Press.

Information also surfaced Monday suggesting authorities had been close on the trail of the alleged plotters before the attack at the Glasgow airport.

Rental agent Daniel Gardiner, whose company leased a Glasgow-area house searched by police, said officers contacted his firm just before the airport blaze to say they had tracked phone records linked to the property.

Officials recovered at least one cell phone from the car bombs in London, Rep. Peter King of New York, the senior Republican on the US House Homeland Security Committee, said Friday after being briefed about the London situation.

As the investigation spread, police flooded London's subway and train stations, even clamping down on access to the Wimbledon tennis tournament, where concrete blocks were set in front of the main entrance.

In a statement to the House of Commons, Home Secretary Jacqui Smith urged Britons to remain united.

"Let us be clear: terrorists are criminals, whose victims come from all walks of life, communities and religious backgrounds," she said. "Terrorists attack the values that are shared by all law-abiding citizens. It is through our unity that the terrorists will eventually be defeated."

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