Two people were arrested and suspected drugs were seized during a raid on a Lancaster property.
Officers executed a drugs warrant at an address on Whitbarrow Square in the city at around 9am on Wednesday morning.
Inside the address they found a quantity of white powder, believed to be heroin.
A 33-year-old woman and a 41-year-old man were arrested on suspicion of drugs offences and have been released on bail pending further inquiries.
Detective Sergeant Colin Forsyth, Lancaster CID, said: “We have recovered a quantity of powder which we believe to be controlled drugs.
“The use and supply of drugs has a significant impact on the quality of life of our local communities. We would ask that anyone who has any information about people supplying drugs should contact their local police or Crimestoppers.”
Anyone with information can contact police on 101 or Crimestoppers on 0800 555 111.
Calls to Crimestoppers can be anonymous and you will not have to go to court- in an emergency always dial 999.