Plummer was charged with a Class A offense of aggravated attempted murder and two Class C offenses, illegal possession of firearms and violating conditions of release. The shooting victim was identified as Thomas Hourihan, 34, of Wiscasset. Hourihan was treated for 10 gunshot wounds prior to law enforcement arriving and he was later transported to a hospital.   

According to the LCSO report, a witness saw a woman, a man and a child leaving the apartment just prior to the shooting. They were taking separate cars which were all parked in close proximity. The witness saw a man later identified as Plummer come out of the apartment with his hand behind his back. “Almost immediately the witness saw the man fire numerous rounds at Hourihan, (the) woman and (the) child. Police interviews revealed the trio were together and were taking separate vehicles to shop for furniture. Hourihan dived into the woman’s car. She fled with everyone in the vehicle,” Sheriff’s Detective Randy Chubbuck wrote in an affidavit. “There is probable cause to believe Matthew committed the crimes of aggravated attempted murder and violation of conditions of release.”

Prior to the tactical team’s arrival, four to five sheriff’s department members were joined by Boothbay Harbor Police Department, Maine Warden Service and U.S. Border Patrol who participated in the standoff, according to sheriff’s department officials.

On March 20, Plummer was arraigned at Lincoln County Courthouse. His bail was set at $100,000 with no third party bail allowed.