Preston Task Force executed a warrant at Empire House following complaints of drug activity.
The force entered the premises off Church Street in Preston City Centre on Tuesday, 15 February.
Upon entry, the team found a large amount of cash and class A drugs, which have been seized.
Three people were arrested for drugs supply and money laundering.
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A post on social media said: “Following numerous community complaints Preston Task Force conducted a drugs warrant on Tuesday at Empire House, Preston.
“A large amount of cash and class A drugs have been seized and three have been arrested for drugs supply and money laundering.”
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