A man is in serious condition in hospital after being stabbed while trying to help the victim of an attempted robbery, police said.

Officers were called to Marmion Road in Thorneywood, Nottinghamshire, after reports that a group of youths were chasing a teenager on an electric scooter at around 18:25 GMT on Sunday.

Police say the man, who is known to the teenager, suffered a serious stab wound to the stomach shortly after intervening on nearby Beecham Avenue.

The force is appealing for CCTV footage, doorbells, mobile phones or dash cams, as well as urging witnesses to get in touch.

Detectives have been analyzing CCTV footage and are carrying out house-to-house inquiries in the area, police added.

Additional patrols have also been deployed near the scene to provide reassurance while investigations continue.

Inspector Paul Shortt, of the force, said: “We are treating this incident with the utmost seriousness as it left a man in hospital with serious injuries.

“Officers are following a number of lines of inquiry and the public can expect to see police presence in the area for the remainder of the day.

“We believe there were several witnesses to the incident and we want to hear their accounts of what happened.”