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Jurors hear closing arguments in Seth Mazzaglia trial

DOVER, N.H. (AP) -- The lawyer for the man charged with killing a 19-year-old University of New Hampshire student says his former girlfriend lied repeatedly to prevent being blamed for her death.

Attorney Joachim Barth in his final argument to the jury Wednesday says 20-year-old Kathryn McDonough lied during 10 days of testimony to cast 31-year-old Seth Mazzaglia as the more likely killer.

Mazzaglia is charged with first-degree murder and other charges related to the Oct. 9, 2012, death of Elizabeth "Lizzi" Marriott of Westborough, Massachusetts.

Barth maintains that Marriott died of suffocation during rough sex with McDonough involving restraints.

Jurors will hear from the prosecution and the judge's instructions on the law. They are expected to begin deliberations Thursday.

McDonough is serving 1-1/2 to 3 years for witness tampering, hindering prosecution and conspiracy.