A Sri Lankan refugee who killed himself in Sydney's Villawood detention centre was not considered suitable for community placement by security agencies, Australia's Immigration Minister Chris Bowen says.
The Tamil man, who had been detained at the western Sydney centre since late March 2010, was deemed to be a refugee in August.
He was one of 462 people awaiting security clearance from the Australian Security Intelligence Organisation (ASIO).
"There are cases, and this is one, which are more complex and which ASIO will need to take more time to consider whether this person would be a risk to national security," Bowen said.
"There was consultation with the relevant security agencies, that's ASIO, and the advice was it was not appropriate in this case."