Port Elizabeth police have confirmed that a suicide note was found at the Theescombe property where former policeman and author, Mark Minnie's body was found with a gunshot wound.
Police spokesperson Colonel Pricilla Naidu also told Algoa Fm News on Tuesday afternoon that the gun found next to his body did not belong to Minnie.
The 58-year-old, who was a detective in the eighties, became well known when he co-authored an explosive book titled The Lost Boys of Bird Island with investigative journalist, Chris Steyn.
The book, claims to expose a paedophilia ring involving three former National Party Ministers, including later former Defence Minister Magnus Malan, former Environmental Affairs Minister, John Wiley and a third Minister who is still alive.
The book alleges that Malan had commandeered air force helicopters to take him and friends to Bird Island off Port Elizabeth where they allegedly sexually abused young coloured boys from Uitenhage.
It also details an incident in which one of the boys was seriously wounded when a gun, placed in his rectum, went off. He was later treated at a Port Elizabeth hospital.
In a statement on Facebook Thamm said that she had worked with Minnie and Steyn on the book and was "devastated by this".
"I know he was terrified for his life and that there are many who lurk in the shadows who would benefit from his death," she wrote in her Facebook post.
In a statement on Tuesday, police said no foul play was suspected "at this stage" in the death of the former policeman.
Police spokesperson, Captain Johan Rheeder, said that the 58-year-old man was found dead at his friend's farmhouse in Theescombe.
"According to police information, the ex-policeman visited his friend at his farm at about 09:00 (on Monday). The friend left him to rest and he went out with his workers," Rheeder said in a statement.
"At about 21:00, the friend received a call from the deceased's female friend enquiring about his whereabouts. The friend then went home and went to the deceased's room and noticed that he was not in the room".
"He looked for the deceased and found him outside lying near a bush with a gunshot wound to his head. A firearm was found lying next to him," Rheeder said.
Three people associated with the story are now dead, including Wiley and Minnie and Port Elizabeth businessman, Dave Allen, who was found shot dead on a city beach in the 1980's.