DEDHAM — Maine drug agents say they’ve seized more than 1½ pounds of cocaine and arrested four people following a monthslong drug investigation.

The Maine Drug Enforcement Agency said 29-year-old Michael Vilasuso of Dedham, 49-year-old Maureen Leeman of Mount Desert, 29-year-old Thaddeus Jozefowicz of Bangor and 45-year-old Stephanie Martin of Clifton are charged with trafficking in cocaine.

Agents say most of the drugs and more than $10,000 in cash were found Saturday at Vilasuso’s home in Dedham, where he was arrested. The other three were arrested after being stopped in their vehicles.

Police say the cocaine was believed to have come to Maine from Massachusetts.