More than 10 years after Olivia Newton-John‘s ex-boyfriend, Patrick McDermott, went missing, a new report claims Patrick may be alive — and living in Mexico with another woman.

According to Australia’s Woman’s Day, Patrick — who was previously thought to be dead after he disappeared at sea during a 2005 fishing trip off the California coast — has been secretly living in a remote area of Mexico with his German girlfriend for the past 11 years.

olivia newton john patrick mcdermott getty images

Olivia and Patrick in January 2005.

“I spoke to people [in Mexico]. The girl he was traveling with was described as having a German accent. To come up with the conclusion that he fell off the [fishing] boat, and allegedly no one saw him fall off the boat, is the most preposterous thing I’ve ever heard in my life,” John Nazarian, the first detective to investigate Patrick’s case in 2005, told the magazine.

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“Patrick’s probably now working in the yachting industry for a high-profile family down there,” private investigator Philip Klein told Australia’s Woman’s Day of Patrick, 59.

Patrick — who was 48-years-old at the time of his disappearance — and Olivia, 67, dated on-and-off for nine years before he went missing.