KILLER expat Dave Mahon has been diagnosed with cancer.
The convicted killer has cancer of the throat and neck, sources in Ireland have revealed.
It comes as he continues to serve his seven-year sentence for stabbing his stepson Dean Fitzpatrick to death in Dublin in 2013.
During the trial, Mahon tried to argue Dean had run into his knife during a heated argument in an ‘attempted suicide’.
The murder was just five years after Dean’s sister, Amy Fitzpatrick, vanished from the Costa del Sol.
The 15-year-old was walking to her home on Mijas costa on New Year’s Eve in 2007 when she disappeared.
While many pointed the finger at Mahon, a body was never found and searches have failed to turn up any substantial evidence.
Amy’s biological father launched another appeal during the tenth year anniversary this month.
“I am still devastated over the loss of my two children, Amy and Dean,” he said, “I would like to ask people, who were there 10 years ago when Amy went missing and may have information that can now share, to please contact police.”