ation into the medical practitioners per se. It's an investigation in support of the investigation by the London Metropolitan Police counter-terrorism command," Keelty said.
Seven people have been arrested in Britain over the attacks, all of them doctors or with medical links.
Mr Ruddock said the AFP and WA police had been working in close cooperation and were liaising closely with other Australian authorities and the UK.
"It should be emphasised that a presumption of innocence exists in every police inquiry. No one has been arrested, charged or detained in relation to these inquiries," he said.
"There is no suggestion of any threat to the people of WA and the Australian government has received no information which would result in an increased threat.
"As this is an ongoing investigation, it would be inappropriate to comment further."
He said the national terrorism alert remained at medium, as it had been since 2001.
The AFP has been given until Monday night to hold Dr Haneef in Queensland during which time it will peruse a huge number of documents seized during the Australian raids.
"Obviously (the documents) take some time to work through, particularly if they're in a foreign language," Keelty said.
WA Premier Alan Carpenter stressed, "I would not like to see a common slur against our Indian or other overseas-trained doctors because of what's happening in Britain or what's going on with the investigation in Brisbane. That would be very, very regrettable."
Still, he added, he expected the federal government to review the screening process for migrants to Australia if necessary.
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