Four women and a man has been arrested after police swooped on homes in Tipton and West Bromwich.
Cocaine and heroin were seized and evidence of money laundering was recovered.
Police said it followed a probe into the illegal importation and supply of drugs.
Houses on Tividale Street, Church Lane, St Marks Road, Shireland Road, Manby Street in Tipton and Hazelbeech Road, West Bromwich were searched yesterday morning.
On Tividale Road a 32-year-old man was arrested on suspicion of possession of drugs. Two women, 27, and a third woman, 31, were arrested from Church Lane, Shireland Road and Manby Street on suspicion of money laundering. A 24-year-old woman was arrested on suspicion of supply of drugs.