The detainee, who spent nearly a decade in detention after his visa was cancelled in April 2014, was held at North West Point Immigration Detention Centre on Christmas Island.
Private security giant Serco is contracted to manage the centre.
Less than a week after his arrival, NR was forcibly restrained by five officers.
The incident came after NR asked to be moved to another compound rather than the one assigned to him, out of fear of another detainee who’d allegedly previously assaulted him.
When his requests were repeatedly rebuffed, he lashed out verbally.
Home Affairs refuses apology to detainee over treatment. By Farid Farid, AAP