POLICE seized substances believed to be heroin and crack cocaine in drugs raids in Blandford.
Two men and two women at the address in Salisbury Street were arrested and released on bail while tests are carried out on the substances.
Two men were also arrested at a property in Langton Road, Blandford during the execution of a second warrant.
A substance believed to be heroin was found and is being analysed.
Both men were released on bail.
Inspector Shawn Whitley of North Dorset police said: "I want to send out the clear message to those people who sell and use class A drugs that the police in North Dorset will not tolerate this activity.
"We will continue to take positive action where there is intelligence to suggest such activity is taking place."
He also urged with information about drug use to call Dorset Police on 101 or the anonymous Crimestoppers number on 0800 555111.