Crime & Safety

State Building Case Against Alleged Killer

Seth Mazzaglia is charged with killing University of New Hampshire student Elizabeth Marriott.

State prosecutors have until the end of February to bring an indictment against a Dover man charged with the murder of University of New Hampshire student Elizabeth "Lizzi" Marriott.

A Strafford County Superior Court judge recently granted state prosecutors extra time to build their case against 30-year-old Seth Mazzaglia, according to Foster's Daily Democrat.

Mazzaglia was arrested in October and charged with Marriott's murder which authorities say occurred on Oct. 9 after the UNH student went to his apartment to visit a friend. Authorities have searched the Piscataqua River in Newington and Portsmouth but have not yet found Marriott's body.

Find out what's happening in Exeterwith free, real-time updates from Patch.

Mazzaglia's girlfriend, Kathryn McDonough, 19, of Portsmouth, was recently charged with lying to police about his whereabouts leading up to his arrest.

PREVIOUS COVERAGE

Find out what's happening in Exeterwith free, real-time updates from Patch.

  • Search Unsuccessful for Lizzi Marriott's Body
  • Man Charged with Murdering UNH Student
  • UNH Student Lizzi Marriott Missing


Get more local news delivered straight to your inbox. Sign up for free Patch newsletters and alerts.

We’ve removed the ability to reply as we work to make improvements. Learn more here

To request removal of your name from an arrest report, submit these required items to arrestreports@patch.com.