Four people were arrested in connection with the supply of Class A drugs in Watford after a house in Queens Road was searched on Tuesday (January 14).
Suspected cocaine, heroin, cannabis and cash were seized from the property.
A 16-year-old boy from Northolt, an 18-year-old boy from London and a 17-year-old boy from Watford were arrested on suspicion of possession of Class A drugs with intent to supply. They have been released on police bail pending further enquiries.
Jason Dowsett, 44, of no fixed abode was arrested outside the house and charged with possession of controlled Class A drugs. He will appear in court on January 27.