Drugs including heroin and cannabis worth around £40,000 have been seized in Fraserburgh.
A series of drug raids were carried out on Thursday, March 6 as part of Operation Allerton - an intelligence-led operation targeting organised crime groups.
A total of 18 officers took part in the enforcement activity which resulted in five warrants being executed and a four-figure sum of money being recovered.
A 32-year-old man is due to appear at Peterhead Sheriff Court as a result.
A further two males aged 35 and 31 and a female aged 29 have been arrested and will be reported to the Procurator Fiscal.
Detective Inspector Kevin Goldie, who led the operation, said: “Operation Allerton is an intelligence-led operation targeting those persons who present the greatest harm to our communities.
“The recent activity has resulted in the removal of a substantial quantity of controlled drugs from the streets and serves as a reminder to those organised crime groups who seek to supply drugs in the area that we will take all possible steps to disrupt their activities and make Aberdeenshire and Moray Division a hostile place for them to operate.
“We are committed to keeping people safe and Operation Allerton will continue for the next few weeks.
“I would like to thank those members of our community whose information has driven the activity thus far and appeal to anyone who may have information in relation to drug dealing or any form of criminal activity in their communities to contact Police Scotland on 101 or speak to any of your local Police officers.”