An Australian man who was bashed unconscious in Bali last week has died in hospital this morning.

John Bourke, aged 63, died in Sanglah Hospital at 3.20am, doctor Ida Bagus Alit told 9NEWS.

The retired Northern Territory mining engineer was found severely injured in his villa in Bali early on May 12.

He had been placed in an induced coma but failed to recover from his injuries.

A GoFund me page created by William Irwin raised $15,000 to cover Mr Bourke’s medical costs.

Mr Irwin has written a post advising that Mr Bourke has died in hospital.

“After a nine day battle, it's with a heavy heart that I have to share Neil John Bourke passed away early this morning,” he wrote.

“I will give a further update later today after I go to the hospital. Thankyou everyone for the tremendous amount of love and support.”

Earlier, he claimed that Mr Bourke had been “left to die” due to a lack of insurance.

“An elderly Aussie man was left to die in a Bali hospital because he doesn’t have insurance to pay for life saving treatment,” a statement on the page read.