18/07/2015 00:01 BST | Updated 17/07/2016 06:12 BST

Man Quizzed Over 'Road Rage Murder' Of Great-Grandfather Donald Lock

A man is being questioned by detectives today over the alleged road rage murder of a great-grandfather who was killed following a minor crash on a village road.

Donald Lock, 79, was knifed repeatedly after he got out of his car following the shunt on the A24 at Findon, near Worthing, West Sussex.

Married for 55 years, Mr Lock, a veteran member of the Worthing Excelsior Cycling Club, died at the scene at around 8.40pm on Thursday.

His family revealed that he had recently been given the all-clear from cancer and was due to become a great grandfather for the sixth time.

A 34-year-old man, from Worthing, is being questioned on suspicion of murder after he was arrested by armed officers some 18 hours later.

A Sussex Police spokesman said detectives were "not looking for anyone else at this time" in connection with Mr Lock's death.

Before he died, Mr Lock attended a social gathering of Worthing Excelsior Cycling Club, which stages a weekly evening 10-mile time trial in the summer, its secretary Adrian Palmer said.

Mr Lock was believed to have been on his way home when he crashed into the back of another car, got out of his vehicle and was stabbed multiple times.

The death devastated family and friends of Mr Lock, a Brighton and Hove Albion season ticket holder who still cycled up to 150 miles a week, relatives said.

In a statement, they said: "He still holds the club record for the 24-hour time trial having remained unbeaten for 44 years. He was full of energy having recently been given the all-clear from cancer.

"Not only was he passionate about cycling but he had also been supporting Brighton and Hove Albion since the 1940s and was a season ticket holder.

"He loved travelling the world with his wife Maureen and he adored his family. He and Maureen had just celebrated their 55th wedding anniversary."

Mr Lock, known as Don, leaves son Andy, daughter Sandra, four grandchildren, and five great-grandchildren, with the sixth great-grandchild due later this year. He had lived in Worthing for 55 years.

Police teams carried out fingertip searches of the undergrowth down the middle of the carriageway where the incident happened.

Detective Superintendent Adam Hibbert, of the Sussex and Surrey major crime team, said: "A man is in custody on suspicion of murder.

"I continue to appeal to anyone who witnessed the collision on the A24 at 8.40pm last night, or who may have CCTV or dashboard cameras of the area at that time, to come to assist our investigation."

Anyone with information is asked to call Sussex Police on 101, or Crimestoppers on 0800 555 111, quoting Operation Wise.