FBI, File, Associated Press
This file photo provided Friday, April 19, 2013 by the Federal Bureau of Investigation shows Boston Marathon bombing suspect Dzhokhar Tsarnaev. The focus of the Boston Marathon bombing trial figures to be as much on what punishment Dzhokhar Tsarnaev could face as on his responsibility for the attack. With testimony expected to start later in January 2015, the Justice Department has given no indication it is open to any proposal from the defense to spare Tsarnaev's life, pushing instead toward a trial that could result in a death sentence.

BOSTON — A federal judge has criticized lawyers for Boston Marathon bombing suspect Dzhokhar Tsarnaev for publicly releasing portions of confidential juror questionnaires.

Judge George O'Toole Jr. called the release "improper."

Earlier Thursday, Tsarnaev's lawyers quoted excerpts from questionnaires in arguing that Tsarnaev cannot receive a fair trial in Massachusetts because many people already believe he's guilty and have personal connections to the bombings. They filed a third motion to move the trial outside the state.

O'Toole wrote that "great care" has been taken to protect the privacy of jurors. He ordered the defense motion sealed from public view.

Tsarnaev is accused of working with his brother to carry out the 2013 attack, which killed three people and injured more than 260. Tamerlan Tsarnaev died in a shootout with police.