OFFICERS searched a Blackburn supermarket in a bid to trace a wanted man.
The force helicopter and patrol cars were sent to Asda, in Grimshaw Park, at 7.15pm on Tuesday after reports the man was in the shop.
Witnesses said they spent around an hour looking for the suspect and showed workers a photograph of him in case they recognised him.
Police were unable to confirm what the man was wanted on suspicion of.
Last night, no arrests had been made.