Four suspects who were captured on CCTV at a compound in Sheldon are being sought after thousands of pounds worth of fuel was stolen from storage tanks.
Detectives launched an investigation following the theft of nearly 500 litres of diesel from parked vehicles in Garretts Green Industrial Estate last month.
It is thought the offenders struck at some point overnight on the 28/29 November and forced off fuel caps to steal the contents.
Anyone who recognises the men in the images should contact the Sheldon neighbourhood policing team on 101 or the independent charity Crimestoppers anonymously on 0800 555 111.