A man has been arrested over the murder of an ex-Navy officer thought to have been run over by his own car, police said.
Michael Samwell, 35, was fatally injured as he confronted thieves outside his home in Greater Manchester.
Shouting was heard at about 03:00 BST on Sunday before Mr Samwell was found in a parking area at the rear of the house, in Chorlton-cum-Hardy.
A 21-year-old man is being held on suspicion of murder.
He is being held in police custody for questioning, Greater Manchester Police said.
Det Supt Jon Chadwick said police were continuing to appeal for witnesses following Mr Samwell’s “senseless murder”.
“My thoughts continue to be with Mike’s family and friends at this devastating time,” he said.
Mr Chadwick said the killing had “crossed the line” and appealed to anyone with information to “search their consciences”.
He appealed to the criminal fraternity “to help us out”, describing Mr Samwell’s death as “more than criminal”.
Mr Samwell was asleep with his wife Jessica in their Cranbourne Road home when the intruders struck.
The former submarine officer went downstairs to investigate noises and ended up in a parking area at the rear of the house.
Police believe he was run over at least once as he tried to prevent the theft of his black Audi S3 sports coupe, which was later found damaged about three miles from the house.
He was taken to hospital where he died from serious injuries.