Two men in their 40s, four in their 20s and an adult in his teens.
Seven men have been arrested in Mayo as part of an operation targeting organised crime in both Mayo and Galway.
A number of properties were searched in Ballinrobe, Co.Mayo and further properties were searched in the Ballybane and the Bohermore areas of Galway City.
A total of seven men were arrested. Two men in their 40s, four in their 20s and an adult in his teens.
A joint Garda operation involving Gardaí from the Mayo/Roscommon/Longford division and Galway division was carried out on Wednesday morning.
The operation involved 85 Gardaí with assistance provided by a number of national units including Armed Support Unit, Air Support Unit and the Garda Dog Unit.