EagleTribune.com, North Andover, MA

Boston and Beyond

July 25, 2013

AP: Lawyer says NH teen disappearance plea coming

CONCORD, N.H. (AP) — The lawyer for a woman who allegedly lied to police about the disappearance of University of New Hampshire sophomore Elizabeth “Lizzi” Marriott last fall said she will plead guilty to all charges against her Thursday.

Kathryn McDonough of Portsmouth is charged with hindering prosecution, conspiracy and tampering with a witness in the death of the 19-year-old Marriott, whom McDonough had befriended shortly around her disappearance.

Defense attorney Andrew Cotrupi would not comment Wednesday on what sentence McDonough would receive, but told The Associated Press he expects his client to be taken into custody after the hearing in Rockingham Superior Court.

Members of Marriott’s family are expected to attend the change-of-plea hearing and to address the court. Robert Marriott, Lizzi’s father, did not return a call seeking comment.

McDonough’s ex-boyfriend, 30-year-old Seth Mazzaglia, is charged with first-degree murder for allegedly strangling Marriott during an attempted sexual assault Oct. 9 in the Dover apartment he shared with McDonough. Police say the couple told investigators they dumped her body into the waters off Peirce Island. It has never been recovered.

McDonough was arrested Christmas Eve and remained in custody until Jan. 2, when she was released on $35,000 bond on the condition she live with her parents in Portsmouth.

Her willingness to testify against Mazzaglia is expected to be a condition of her plea agreement. Mazzaglia returns to court July 31. He is being held without bond.

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