CONCORD, N.H. — A New Hampshire woman charged with lying to investigators about the disappearance of a University of New Hampshire sophomore last fall has pleaded guilty.

Nineteen-year-old Kathryn McDonough of Portsmouth pleaded guilty Thursday to hindering the prosecution, conspiracy and tampering with a witness.

McDonough’s ex-boyfriend – Seth Mazzaglia is charged with strangling 19-year-old Elizabeth “Lizzi” Marriott last October.

The couple admitted to investigators that they dumped her body into the waters off Peirce Island in Portsmouth. It has never been recovered.


Only subscribers are eligible to post comments. Please subscribe or login first for digital access. Here’s why.

Use the form below to reset your password. When you've submitted your account email, we will send an email with a reset code.