Casey Johnson lived in rat-infested home without basic utilities

Casey Johnson lived her final days in squalor in a garbage-strewn slum with no electricity, water or gas, and rats in her swimming pool.

Cut off from her family fortune, the 30-year-old Johnson & Johnson heiress’s privileged life spiralled out of control into a drug-fuelled hell.

But last night, friends said Johnson was broke as she battled diabetes and emotional demons in the final months of her life.

She reportedly lived without basic utilities at her rented home because she couldn’t afford to pay the bills and kept her Porsche hidden in the garage to prevent it from being repossessed.

‘It was like Grey Gardens,’ said one friend, referring to the infamously squalid mansion lived in for decades by relatives of Jackie Onassis, which was the subject of a TV drama last year starring Drew Barrymore and Jessica Lange.

There are dirty dishes everywhere and rotting food. There is graffiti on the walls. The pool looks like a swamp,’ the source told the New York Post.

Sources say she had been dead for up to seven days before her body was found.

Her diabetes was said to be getting worse after her body built up a tolerance to insulin.

But friends claimed she made her condition worse by taking prescription medication such as OxyContin and Adderall as well marijuana, Ecstasy and cocaine.

Neighbours said there was a revolving door of shady-looking characters at Ms Johnson’s house.

‘I saw very trendy rock-and-roll seedy types coming in there at all hours of the night,’ said one neighbour.

Johnson, whose billionair father Woody owns the New York Jets American Football team, was reportedly rushed to hospital several times in recent months because she failed to take her insulin properly, although her family disputed the claim saying a pump delivered her medicine automatically.

In November, she allegedly tried to commit suicide and spent three days in intensive care after taking a drug overdose.

The Los Angeles Coroner’s Office said yesterday that an initial autopsy was inconclusive, although there appeared to be no evidence of suicide or trauma to her body.

According to TMZ, there was a ‘significant amount’ of prescription drugs at the house.

‘Her family were giving her tough love and said she was cut off unless she went into rehab. They did everything they could to help her, but she wouldn’t help herself,’ a friend told the Post.

Casey Johnson’s funeral is expected to be held in New York on Sunday.