Autopsy Confirms Body Found in River Is Plymouth Murder Suspect

PLYMOUTH, MA — Authorities have confirmed a body recovered from a river this week is that of a Plymouth murder suspect.

Tyler Hagmaier, 24, stabbed a Quincy College professor to death on May 5 inside her Plymouth apartment, authorities said.

He then drove to the western Massachusetts town of Gill and threw himself in the Connecticut River in a suicide attempt, police said.

A body was recovered from the river Monday; an autopsy confirmed it was Hagmaier, Plymouth County District Attorney Timothy Cruz announced Wednesday.

Hagmaier stabbed Rasmussen over 30 times, police said. Hagmaier's DNA was found on a sweatshirt and cigarette butt inside Rasmussen's apartment on Tide View Path in Plymouth. Her murder was not random, authorities said, though a motive has not been disclosed.

Hagmaier has a history of mental illness, authorities told CBS Boston.

Neighbors said they heard screams from Rasmussen's apartment the night she died, Cruz said.

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Previous coverage

• Body Discovered Matching Plymouth Murder Suspect
• Plymouth Murder Suspect Presumed Drowned Indicted In Case He's Alive
• Quincy College Professor Murder: Search for Suspect Continues
• Stabbed 30+ Times: Quincy College Professor Murdered in Plymouth