The Indian-trained doctor, a registrar at Gold Coast Hospital, is the eighth person held over the foiled terror plot to detonate car bombs in London and the attack using a flaming 4WD on Glasgow Airport.
Premier Peter Beattie revealed this morning a second doctor is also being questioned.
Following a search warrant executed on the Gold Coast Hospital at Southport he said another doctor had been questioned but he was not aware of any link between this man and the foiled terror plot in the UK.
"There is at this point no suggestion of anything in relation to the second doctor. We do not know of any link the second doctor may have had with anyone."
He said the arrested man and the man being interviewed were recruited in March 2006 from Liverpool, England, after advertisements ran in the British Journal of Medicine.
Earlier, he said the man had been detained by a counter-terrorism team comprising Queensland police and Australian Federal Police officers at the Brisbane International Airport attempting to leave Australia.
Two Arab doctors, both licensed to work in Britain, were among the other seven people arrested over the foiled terrorist attacks on London and Glasgow airport. Britain's Sky News reports that five of the eight people now being questioned over the terror attacks are trained doctors.
Doctors arrested over UK terror plot Australian Federal Police Commissioner Mick Keelty said the man had not been on any Australian terrorism watch lists.
Attorney-General Phillip Ruddock said no charges had been laid against the man who is an Australian resident but not an Australian citizen.
"The gentleman concerned is a registrar at the Gold Coast Hospital in Southport," Mr Ruddock said.
The man began work at the Gold Coast Hospital in Soutport on September 4 last year as a junior doctor supervised by senior staff.
He was rostered to general medicine and emergency.
Mr Beattie said the doctor was regarded by the hospital as a "model citizen".
The premier said he hoped overseas-recruited doctors working in Queensland hospitals would not be targeted as a result of the arrest.
"It's really important that everybody understands that while we have recruited overseas doctors, 99.9 per cent of them are good citizens who are working very hard," he said.
"I do not want to see in hospitals, overseas recruited doctors treated badly in some way."
The second doctor being questioned also came from Liverpool, Mr Beattie said.
Mr Beattie said there was no reason to believe there was any threat to patient safety at the hospital.
"Following his arrest on Monday night at 11 o'clock a number of warrants had been issued, including one at the Gold Coast Hospital."
Mr Ruddock said it was believed the man was seeking to leave Australia when he was arrested at the Brisbane International Airport, he did not have a return ticket.
He said the arrest did not affect Australia's terror alert level.
``There is no information to suggest that the terror alert at medium should be varied,'' Mr Ruddock said.
``What it means is while a terror attack could certainly be possible in Australia we have no specific information about any such planned action here.''
Australian Federal Police Commissioner Mike Keelty said Australian authorities acted on intelligence received from the UK police in making the arrest on Monday night.
"We've been working with the UK police since the bombings commenced, we've got a person attached to the counter terrorism command in London and the information for us to look at somethiig here in Australian came to us over the weekend.''
"At his stage there is no evidence or intelligence to suggest that we should be recommending to the Attorney-General that the threat level should change.
"Obviously we're acting on the information provided to us by the UK authorities, the matter is in hand, the person has been detained and search warrants have been executed. The issue for us now is to look at the material that has been obtained from the search warrant and decide what is the most appropriate course from then on.''
Gold Coast Hospital said its switchboard had gone into meltdown after the news broke. A spokesperson said there was concern emergency calls may not get through.
Premier Peter Beattie said there had been no increase to Australia's terrorism alert level.
He said the level would remain at medium.
"I want to reassure Queenslanders that there has been no change to the threat level which means that there is no threat, or no one knows of any threat in Queensland."
"The man is currently assisting police with their enquiries and no charges have been laid," he said.
Earlier, Brisbane Airport spokesman Jim Carden confirmed there was an arrest at 11pm yesterday.
"Yes there was an arrest last night but I will stress at no stage was there any threat to the Brisbane Airport," he said.
A police media spokeswoman said Police Commissioner Bob Atkinson would not be commenting on the arrest because it was under the jurisdiction of the Australian Federal Police.
"When we get some further details we might say something but at the moment he is not saying anything because it is an AFP (Australian Federal Police) job," she said.
British police had earlier confirmed an eighth man has been detained but would not say where the man was arrested.
British police said in a statement the man was arrested at an undisclosed location in connection with the investigation into the incidents in London and Glasgow.
"He remains in custody," British police said.
