Father and son Bob and Nic SeddonLee Boswell

A man has been arrested in Manchester on suspicion of shooting his parents just four months after he was hailed a hero for saving their lives.

The bodies of Bob and Patricia Seddon were discovered at their home last Friday. The couple, who had been married for 45-years, died as a result of gunshot wounds.

Bob (68), a retired airport worker, and Patricia (65), a retired cleaner, were found dead in their home at Sale, Greater Manchester, on Friday after a concerned relative contacted police. Their son Nic Seddon was arrested on Saturday.

According to The Telegraph, Nic Seddon (45) who works as a sales manager had saved the lives of his parents just months earlier after the family was involved in a car crash. The father of three was driving a BMW hire car when it hit a brick in the road and careered into Bridgewater Canal in Timperley.

After freeing himself, the car sales manager rescued his 16-year-old nephew Daniel, who has special needs, before returning to help firefighters rescue his parents who couldn’t swim.

As a result of his heroic rescue, the father-of-three was nominated for a Pride of Britain Award.

It is understood that the deceased couple suffered a series of family tragedies in recent years. Four years ago they lost their 40-year-old daughter Lesley after she suffered from an epileptic fit at the family home. Bob then became the full time carer for her son Daniel before the grandfather suffered a heart attack last year. Then later, Patricia suffered a brain haemorrhage.

Superintendent Simon Retford, of Greater Manchester Police, described it as "tragic case"

He said, "The very nature of the couple's injuries have led us to setting up a murder investigation as both have been shot.

"This has led us to arresting a 45-year-old on suspicion of murder."

"The investigation is very much live and still moving and a very fast pace.

"But we do not believe this was a random attack and it's believed to be an isolated incident."

“Our investigation will be able to find the answers if it is allowed to run its natural course unhindered by speculation or gossip.

“People need to trust the police to continue with their investigation.