Information regarding the death of an individual named Michael Telling

Dear Australian Federal Police,
Michael Henry Maxwell Telling was born in 1950. He died in 2009.
He murdered Monika Elizabeth Zumsteg in 1983 in England. On 30 June 1984 he was sentenced to jail for 10 years for killing his wife in what was known as the 'headless corpse' trial. On release after less than 5 years he moved to Rossmoyne, Canning City, Western Australia, Australia. The reason for his premature death is not publicised.
I am a former police detective who spent time with Telling and his victim. I am also a published author, and intend writing his fascinating story. He was a fantasist and liar. A book called Irresistible Impulse was written about him, full of lies and speculation. I intend writing the correct story.
All I am asking is to be told how he died. I have my suspicions but they are just that.
I would be obliged for your assistance, and should it be forthcoming, I intend visiting you and thanking you in person.
I live in the UK.

Yours faithfully,

Steven Thrift
0044 7770800510
[email address]

Dear FOI,
Having followed the link, I am not surprised that there are NO RECORDS
Blocked at every turn.

Yours sincerely,

Steven Thrift