Four people have now been arrested in connection with a September armed robbery in which police say three of them dressed as law enforcement officers as they robbed a medical marijuana grower in Winterport.

Maine State Police this week arrested two more suspects in the Sept. 21 robbery. Two men were arrested Oct. 1.

Arrested this week were 45-year-old Kerry Hurd, accused of being one of the three thieves dressed as police, and 28-year-old April Jones, who allegedly drove the getaway vehicle, according to Stephen McCausland, spokesman for the Maine Department of Public Safety.

The licensed medical marijuana grower who they are accused of robbing had security cameras on the property that recorded the three men dressed in outfits with police logos. The security camera images clearly showed two of the three people who took an armload of mature marijuana plants.

Scott Roberts, 35, and Jeffrey Hurd, 47, both of Glenburn, turned themselves in after police released the images and asked for the public’s help in identifying them.

Kerry Hurd, who is Jeffrey Hurd’s brother, was arrested Thursday by the U.S. Marshals Service and state police in the parking lot of a Hannaford store in Bucksport. He was taken to the Waldo County Jail on charges of robbery, impersonating a public servant, trespass and theft by unauthorized taking.

Jones, of Orneville Township, was arrested at her home Monday. Police said Jones is Roberts’ girlfriend. Jones was taken to the Piscataquis County Jail on charges of robbery and theft by unauthorized taking.