A 45-year-old Milford woman was arrested Wednesday on Henderson Lane for selling heroin and crack cocaine.

The MDEA, Penobscot County Sheriff’s Deputies and Old Town Police charged Olivia Dunn after a three month investigation into reported criminal drug activity at her home.

Authorities applied a search warrant and seized approximately 50 grams of cocaine base (valued at $5,000), 30 grams of heroin (valued at $7,500), a 9mm pistol and other evidence of drug crimes, said MDEA Commander Darrell Crandall.

Dunn is at the Penobscot County Jail, charged with two counts of trafficking and two counts of aggravated trafficking (heroin and cocaine base). Her bail is $50,000.

Crandall said more arrests are posable as this is an ongoing investigation.