PICTURED: Aussie dad, 36, found dead in a Bali bungalow after 'complaining of a headache' - as doctors search for what killed the holiday-maker

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Clinton James Dally, 36, has died in Bali

An investigation has been launched into the cause of death of an Australian father found dead in his hotel room in Bali after complaining of a headache.

Clinton James Dally, 36, checked into the Matahari Bungalow on Friday with his girlfriend Ni Ketut Kartika, 29. 

The Perth man visited the Kuta Art Market on Saturday morning before returning to his Kuta hotel room to lie down, where his body was found at 1pm on Saturday.

Staff found him face down on the bed unconscious, and when the doctor arrived he declared the man dead of an apparent heart attack, The Herald Sun reported.

Clinton James Dally, 36, was found dead of an apparent heart attack on Saturday afternoon

A photograph taken inside the hotel room shows a carton of cigarettes, a bottle of Gentleman Jack whiskey, some Panadol, Berocca tablets, a phone, wallet and smart tablet on a small table

9NEWS reported that a photograph taken inside the hotel room shows a carton of cigarettes, a bottle of Gentleman Jack whiskey, some Panadol, Berocca tablets, a phone, wallet and smart tablet sitting on a table.

Ms Kartika told police that Mr Dally had been suffering from stomach pains on Saturday morning before he died, and that he had taken a Panadol and had a beer on Friday.

Mr Dally had told his girlfriend of three months that he wasn't sick, but simply tired.

 Mr Dally (right) visited the Kuta Art Market (left) on Saturday morning before he passed away

Kuta police chief, I Nyoman Wirajaya, said an investigation had been conducted and police had found the room to be neat.

'We do not find any violence or crime in this case,' he concluded. 'The doctor alleged that the victim died because of a heart attack.'

Police said the man's body was taken to Sanglah morgue awaiting instructions from local and Australian authorities concerning an autopsy. 

Mr Dally (left) has been found dead in his Balinese hotel room at the Matahari Bungalow (right)

The 36-year-old Mr Dally went out Saturday morning before returning to the hotel (pictured)