The Massachusetts judge who oversaw former New England Patriots player Aaron Hernandez's murder trial is allowing his lawyer to question under oath an anonymous tipster who raised concerns about one of the jurors who convicted him.

Superior Court Judge Susan Garsh on Tuesday approved the request from lawyer James Sultan over the objections of prosecutors. She says the questioning will be in court with Hernandez present, but the session will be closed to the public.

The woman hasn't been identified in court documents. But the district attorney's office says she began a sexually explicit relationship, including letters, with Hernandez after he was arrested in 2013 for the shooting death of Odin Lloyd.

Sultan says the woman called him anonymously after Hernandez's conviction in April and raised questions about a juror.