KEIGHLEY Cougars star Danny Jones died of a cardiac arrest triggered by hereditary heart disease, the Rugby Football League revealed tonight.

The cause of Mr Jones's death has been revealed by a post-mortem examination.

Heart disease was not tragically revealed when the 29-year-old standoff underwent an ECG scan in late 2014, a RFL spokesman said.

Keighley Cougars chairman Gary Fawcett said: “While the findings of the post-mortem do provide an explanation for why he died, they allow for little comfort for Danny’s family or all those who knew him.

“His tragically premature death is still very painful for everyone, not least because his heart condition could not even be detected by the ECG.

“All we can do now is mourn his passing, celebrate his life and do everything we can for Danny’s wife Lizzie, their children Bobby and Phoebe and their wider family.”

The Just Giving page set up by the RFL Benevolent Fund to raise funds for Danny’s family has already received donations of £77,000 and is expected to grow substantially this weekend, when many clubs are staging fundraising events.

The Cougars will stage a simple bucket collection at their League 1 fixture against Coventry Bears at Cougar Park on Sunday which kicks off at 3pm and Mr Fawcett has urged everyone who attends to donate what they can.

“My message to Rugby League fans is to stick the money you normally spend on a lottery ticket or a half-time pie into the bucket, and add a tenner on top. If we all do that we can make a massive difference to the lives of Danny’s family,” he said.

“£77,000 is an amazing amount of money but it’s not enough: I have complete faith in not just the Rugby League family but everyone involved in sport, from multi-millionaire professional footballers and the people of Wales to the fans on the terraces across the country to do the right thing by the family of a sporting hero.”

To make a donation visit justgiving.com/dannyjones29