Middlesex District Attorney’s Office Spokesperson Cara O’Brien refused to confirm that Jiggetts would plead guilty and noted that at the moment, Jiggetts is scheduled to be tried at the end of April.

EX-STUDENT TO STAND TRIAL

Smith, the final defendant, was a Harvard senior at the time of the shooting. She is scheduled to be tried in May.

Prosecutors say that Copney, who was Smith’s boyfriend at the time, and the other two men used Smith’s Harvard ID to access the basement of the Kirkland annex, where the shooting took place. Court documents further allege that Smith hid the murder weapon in a friend’s dorm room and helped the three men flee to New York by bus after the murder.

In July 2009, Smith signed an agreement with the district attorney’s office that granted her immunity from criminal charges in exchange for her testimony against the other defendants. In March 2010, however, prosecutors said that Smith had intentionally misled investigators, violating the agreement. She was then indicted on six criminal counts, including serving as an accessory after the fact to a murder, unlawfully possessing a firearm, and willfully misleading police and a grand jury.

She appeared in court for a motion hearing last week.

—Xi Yu contributed to the reporting of this story.

—Staff writer Julie M. Zauzmer can be reached at jzauzmer@college.harvard.edu.