The triple deadly shooting inside a Watertown home over the weekend is being investigated as a murder-suicide, according to the DA.

Nadia Abrahamian, 80, and Karine Asatryan, 35, were shot and killed by David Minasvand, 31, inside their home, the Middlesex DA’s office said in a statement.

After shooting the two women, Minasvand died by a self-inflicted gunshot, the DA’s office said.

The three victims were the only ones present in the Boyd Street unit, where they all lived, at the time of the shooting.

“This is an isolated incident and there is no threat to public safety,” the DA’s Office said.

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Three people were found shot to death inside Massachusetts home: DA

This remains an ongoing investigation being conducted by the Middlesex District Attorney’s Office, Massachusetts State Police detectives assigned to the District Attorney’s Office and Watertown Police.