Mr O’Halloran aged 87 was riding his mobility scooter in west London when he was attacked.
Met Police have today confirmed that a man has been arrested on suspicion of the fatal stabbing of Thomas O’Halloran on his mobility scooter in west London.
The man who has not yet been named was arrested at an address in Southall west London in the early hours of Thursday.
Detective Chief Inspector Jim Eastwood who leads the investigation said:
“I would like to thank the public for their overwhelming support following this horrific incident. As a result of the release of a CCTV image yesterday, an arrest has been made and this investigation is progressing at pace.
“Mr O’Halloran’s family have been updated with this development and continue to be supported by specially trained officers. I would reiterate their previous request that their privacy is respected by everyone as they continue to come to terms with their tragic loss.”
A murder investigation was launched after police were called at 16:06hrs on Tuesday, 16 August to Runnymede Gardens, at the junction with Cayton Road, Greenford to reports of a man with stab wounds.
Officers responded and gave emergency first aid until the arrival of the London Ambulance Service and London’s Air Ambulance.
Despite the best efforts of the emergency services, the man was pronounced dead at the scene.
He has been named as Thomas O’Halloran, who lived in the Greenford area.
Officers believe that Mr O’Halloran was stabbed in Western Avenue shortly before 16:06hrs on Tuesday, 16 August before managing to travel 75 yards or so on his mobility scooter to Runnymede Gardens, where he flagged down a member of the public for help.
Detectives from the Met’s Specialist Crime Command are leading the investigation.
It comes after officers were called to Cayton Road, in Greenford, west London, on Tuesday to reports of a stabbing and Mr O’Halloran was declared dead at the scene.
Detectives believe Mr O’Halloran was stabbed in Western Avenue about 4pm before managing to travel 75 yards or so on his mobility scooter to Runnymede Gardens, where he flagged down a member of the public for help.