Detectives in Northamptonshire are hunting for a white van after a shooting in Kettering on Saturday 14th October.
The believe the van with the registration YD52 NGM, is linked to the incident which happened at 4.45pm in Field Street.
Witnesses say the gunman got out of a vehicle and shot the man before speeding away, the victim has since had to have his leg amputated.
Local newsagent, Jay Goswami told ITV News Anglia that he had called the police after hearing a "really loud bang".
Detectives have released two CCTV pictures showing a white van, which they are keen to identify.
They are asking any witnesses who may have seen the van around the Kettering and Burton Latimer areas between Saturday and Sunday lunchtime to come forward.
Police are now questioning five men, aged 32, 35, 38, 45 and 60 as well as a 28-year-old woman.
Anyone with information should call Northamptonshire Police on 101.