A suspect in the failed terror attack on Scotland's busiest airport was unlikely to survive his severe burn injuries, a doctor who has treated him said today.

An anonymous member of the medical team treating him said the prognosis was "not good" for Kafeel Ahmed, who is suspected of crashing a jeep into Glasgow Airport.

"He has third-degree burns over most of his torso and limbs. It is beyond repair and because he has lost so much skin he is now vulnerable to infection and won't be able to fight it," said the staff member at the Royal Alexandra Hospital near Glasgow.

The patient, Kafeel Ahmed, 27, allegedly crashed the Jeep Cherokee into the airport on June 30, a day after police found two unexploded car bombs in central London.

Photographs of police wrestling a burning Ahmed to the ground have been widely disseminated.

Prosecutors suspect Bilal Abdullah, a 27-year-old doctor born in Britain and raised in Iraq, and Ahmed, an aeronautical engineer from India, carried out the attempted bombings in London before returning to Scotland - where Abdullah worked at a Glasgow-area hospital - and attacking the airport. Abdullah is so far the only suspect to have been charged.

Ahmed was initially treated at the Royal Alexandra Hospital in Paisley, where Abdullah worked as a diabetes specialist.

He was transferred under sedation to the Glasgow Royal Infirmary in the early hours of Monday in an intensive care ambulance.

Ahmed is under constant armed police guard. The medical team member who discussed his condition could not confirm if police had been able to question him.

A spokeswoman for the Greater Glasgow Health Board, said: "The patient remains in police custody and his condition remains critical."

A police spokeswoman would not confirm if Ahmed had been questioned. "We are not releasing anything about this person at the moment," she said.