Police in Nottingham have carried out a second day of early morning raids at houses in Sneinton and St Ann's.
Homes were targeted in a second day of raids
Four more people have been arrested and five more homes searched by detectives and sniffer dogs.
Six people have already been charged with supplying class A drugs after the raids on homes in the districts on Wednesday.
Police say the action is part of Operation Stealth, the force's anti-drug crackdown.
Detective Sergeant Nigel Malik said: "We are more than happy with the result of these raids which are a culmination of a six month covert operation into drug dealing in the St Ann's and Sneinton areas.
"The 10 arrests in two days follow on from a further 20 arrests during similar raids at a variety of addresses over the past few weeks."