Lawyers for the Massachusetts man accused of slaying his wife, two children and mother-in-law want the judge to keep details of the slayings sealed.
Thomas Mortimer IV was indicted on four counts of first-degree murder. The defense says making the "inflammatory" details public will hurt his chances for a fair trial.
A judge will hear arguments on Thursday afternoon from lawyers for to seal a written summary of the evidence.
Mortimer, who grew up in Avon, became a suspect after police were called to his Winchester, Massachusetts home and found the bloodied bodies of Laura Stone Mortimer, the couple 2-year-old daughter Charlotte, their 4-year-old son Thomas and Laura’s 64-year-old mother, Ellen Stone.
Police said even though police say he left two handwritten confessions in the house. Mortimer pleaded not guilty.
Prosecutors say Mortimer killed his family after an argument with his wife.
His lawyer has said Mortimer has mental health issues and has suggested he may use an insanity defense.
The Boston Globe and The Associated Press have filed a motion opposing the sealing of the case summary.