(AP) — A lawyer for Aaron Hernandez says he's concerned one of the jurors who convicted the former New England Patriots player of murder may have been "untruthful" during jury selection.

In redacted court documents released Monday, lawyer James Sultan says he spoke four times with an anonymous caller, starting the day after Hernandez was convicted April 15 of first-degree murder for the 2013 killing of Odin Lloyd in North Attleborough, Massachusetts.

Sultan says the caller told him the juror was present for a discussion about a Boston double murder case that Hernandez is also charged in. Mention of those killings was barred at trial. Hernandez has pleaded not guilty.

Sultan says the juror didn't disclose knowing about the Boston case.

He asked the judge to authorize a subpoena to trace the calls.

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