Police have released images of suspects wanted in connection with a knife attack on a Good Samaritan who tried to stop a robbery on the London Underground.
Just before 11pm on Monday, December 29, a group of people threatened an elderly man on a Metropolitan Line train heading to Northwick Park station.
Another passenger tried to help but was attacked by the group, who slashed him with a knife and left a cut above his eyebrow.
The group then fled Northwick Park Underground station having stolen the man's bag.
Detectives are appealing for anyone who recognises the men pictured, or who may have witnessed the incident, to contact British Transport Police to help their investigation.
Anyone with information can contact BTP by texting 61016 or by calling 0800 40 50 40, quoting reference 607 of 29 December.
You can also contact Crimestoppers anonymously on 0800 555 111.
