Attempted mediation by human rights advocates has failed to convince Canberra prisoner Isa Islam to break his long-running hunger strike.

Islam, now in the 66th day of his hunger strike, remains in Canberra hospital in a much weakened physical state.

After 66 days, the stand-off continues between Canberra's detainee hunger striker and the ACT government Credit:File image

Islam is serving multiple sentences for violent offences, including the stabbing of a man at the Ainslie shops and a vicious assault which put another prisoner in hospital for a month. Islam is now eligible for parole.

He began his hunger strike on December 9 and on January 10 was transferred to Canberra Hospital.