Helena Christensen was on her way to see Heath Ledger when he died

Model Helena Christensen, who had been previously been romantically linked to the late Australian actor Heath Ledger, has revealed that she was on the way to see the him Tuesday when she heard the sad news.

"I was on my way over to pay him a visit when I found out. I had just left him a message and heard his voice on the machine..." she says.

"He was such a special and genuine person, so extraordinarily talented because he was so raw and honest with his feelings. He was so full of life, so electric ... This is immensely sad.

She tells the paper he was "a sweet, smart and talented young man and had many friends. My heart goes out to his family. I am just beyond sad at this point, and shocked...."

Meanwhile, the initial autopsy into the death of Ledger was 'inconclusive', according to U.S reports.

The New York City Medical Examiner carried out the autopsy on Ledger at its Manhattan base to try and determine what killed him.

Police officers say that they discovered a string of prescription and non-prescription sleeping medication in the apartment where the 'Brokeback Mountain' star was found dead on Tuesday.

Police insiders say they believe that Ledger's death was most probably an accidental one and not suicide.

Now the Medical Examiner's office will carry out additional tests, which could take up to ten days to complete, TV station 'NBC 4' is reporting.