A second man has been arrested on suspicion of the murder of a man who was killed by burglars who ran him over in his own car.
The suspect, 20, was detained on Wednesday by police hunting those behind the death of Mike Samwell, 35, who died in the early hours of Sunday morning.
Mr Samwell had been chasing intruders from his £500,000 home in Chorlton, Manchester, after they broke in while he and his wife Jess were asleep upstairs.
The former Royal Navy officer went outside and was run down as thieves drove off in his Audi S3.
He was pronounced dead in hospital around an hour later.
The second suspect, from south Manchester, remains in police custody for questioning, Greater Manchester Police said.
A 21-year-old man arrested on suspicion of murder on Monday has been released on bail.
On Tuesday, Mr Samwell's family said his death had left a "huge hole in our lives that can never be filled".
The tribute said: "Mike was the most wonderful husband, brother and son. He would do anything for anyone and was an ever-dependable and generous family member and friend to so many."
The stolen car was recovered by police badly damaged and abandoned three miles away in the Ladybarn area of Manchester.
Detectives are looking for information about a blue five-door BMW 1 Series seen in the area, which is believed to have been used by the offenders after the incident.