A 60-year-old Dorchester store owner was arrested Friday for allegedly selling cocaine and heroin out of his shop, according to Boston Police.

Ramon Fermin of Mattapan owns Dolly Market on Dacia Street, police said in a statement. Officers executed search warrants at the market and another Dorchester address Friday afternoon and seized one 12-gauge shotgun, approximately 1,210 grams of suspected cocaine, 290 grams of suspected heroin, 1,688 grams of unknown brown and white powders, cutting agents, and $11,200 in cash, the statement said.

Fermin faces several charges, including trafficking Class A and Class B substances, unlawful possession of a firearm, and possession of a firearm with an obliterated serial number, police said.

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Carlos Pimentel, 37, of Dorchester was also arrested and charged with unlawful possession of ammunition and conspiracy to violate the drug laws, according to the statement.

Pimentel and Fermin were the targets of an eight-month investigation, police said. Their relationship is unclear at this time.