New reports have claimed actress and singer Olivia Newton-John’s ex-boyfriend – who went missing 11 years ago – is living in Mexico.

Patrick McDermott and Newton-John dated for nine years before McDermott disappeared on a San Pedro, US fishing trip in 2005.

Police investigators found McDermott had just declared bankruptcy at the time of the disappearance and owed ex-wife Yvette Nipar thousands of dollars in child support.

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The incident was considered suspicious as none of the 22 on board the fishing boat saw McDermott go overboard, nor did they report his disappearance.

Newton-John, her daughter Chloe and McDermott before the disappearance. Photo: Getty

It was only when he failed to show up for a family gathering that Newton-John became concerned and contacted the police.

Now, a new report by Woman’s Day claims the now 58-year-old McDermott is living in the isolated Mexican village of Sayulita and may have a new German girlfriend.

“It’s rumoured he was with a German national. I spoke to people there [in Mexico],” investigator John Nazarian told the magazine.

Investigators claimed Korean-born McDermott attained a second passport in his birth name Patrick Kim and drained two bank accounts just before he disappeared.

Philip Klein, who was hired by a US TV network to find McDermott, wrote a book the story and eventually received a fax from someone claiming to be writing on McDermott’s behalf.

“Pat has asked that I portray to you his innocence. Pat has committed no crime. Pat simply wishes to be left alone,” it read.

“Let him live his life in peace and harmony. He is safe and has started anew again in a new place both physically and mentally. Stop this search immediately.”

In 2010, the Daily Telegraph claimed it had seen emails between McDermott and US investigators, and that McDermott had offered to supply a DNA sample to prove he was still alive.

McDermott insisted he hadn’t done anything wrong, and had simply wanted to escape the “drama” of his life.