Andrew Getty
Andrew Getty, her to an oil fortune, was found dead at his LA home.Facebook

47-year-old heir to the Getty oil fortune found dead with traumatic injuries in his Hollywood Hills home.

More details have emerged surrounding the death of Andrew Getty, who was found unconscious and naked from the waist down on Tuesday.

Paramedics who attended the scene found Getty bleeding from a "traumatic injury to the rectal area", apparently suffering from blunt-force trauma.

Commander Andrew Smith, LA police department spokesman said it was early days in the investigation and that witnesses were being questioned, although no one was in custody.

"At first glance, it does not appear to be a criminal type of act. But that could change," Smith said on Tuesday.

The death appeared to be either accidental or natural, Los Angeles County Coroner's Office spokesman Ed Winter told reporters in a news conference broadcast by TV station KTLA 5.

"He had some medication that we recovered and don't know if he had taken the medication or what his medical history is, we do have a doctor's name that we're also going to follow up," Winter said.

Celebrity news website TMZ.com said that Getty, an heir to his grandfather's oil fortune, was found in a bathroom of his Hollywood Hills home about 2 pm in suspicious circumstances, and that a former girlfriend was being questioned as a potential witness.

A 911 call was placed by Getty's ex-girlfriend, named by KTLA as 32-year-old Lanessa De Jonge, around 2pm. De Jonge reportedly went to the home to check on Getty after urging him to see a doctor about "painful bowel movements", TMZ reported.

Andrew Getty had sought a restraining order against his ex-girlfriend two weeks earlier, The Los Angeles Times said. The case had been scheduled to go to court next week. Police were called to his residence 31 times, mostly for domestic disturbances.

Law enforcement sources told TMZ that Getty was taking medication for his stomach issues and was due to see a doctor on Wednesday – the day after he died.

Andrew Getty's father, Gordon Getty, is the world's 894th richest man with a fortune worth $2.1 billion, according to Forbes magazine.