Serial Killer Ivan Milat Under Heavy Supervision At Prince of Wales Hospital In Randwick

Serial killer Ivan Milat is expected to remain at a Sydney hospital after being transferred from Goulburn's supermax jail.

AAP understands he was transferred to the Prince of Wales Hospital in Randwick on Monday afternoon and is being held in a secure annex of the hospital where inmates are treated.

It's believed Milat is there for a diagnostic procedure and is expected to return to the Goulburn supermax jail in the coming days.

The 74-year-old, who murdered seven backpackers whose bodies were found in makeshift graves in NSW's Belanglo State Forest in the 1990s, was sentenced in 1996 to seven consecutive life sentences.

The former road worker also kidnapped British tourist Paul Onions but he managed to escape from Milat's vehicle.

Corrective Services NSW Commissioner Peter Severin told Seven Network the community can rest assured transfers are done in the "most secure and safe way possible".

High-risk and terrorism-related inmates are always guarded by specialist staff from the Extreme High-Security Escort Unit who control all movements and interactions, a Corrective Services NSW spokeswoman said.

"Extensive security planning and assessment is undertaken before such movements occur," the spokeswoman said in a statement on Tuesday.

Inmates are searched before they leave prison and when they return, she said.

At least one form of restraint, handcuffs or ankle cuffs, stay on high-risk inmates during medical treatment, subject to medical requirements.

"These procedures ensure community safety and security," the spokeswoman said.

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