Police raided an address on Drummond Walk in Melton on Saturday in an investigation into illegal drugs.
The officers and the Neighbourhood Priority Team (NPT) executed a Misuse of Drugs warrant.
A Leicestershire Police spokesman said: “Three people were voluntarily interviewed. What was found inside the property is still being tested. So far no arrests have been made.”
Police are urging anyone who has any information about drug dealers in their area to report them by calling 101 or Crimestoppers anonymously on 0800 555 111.