(AP) — In a quest to find impartial jurors in the trial of Boston Marathon bombing suspect Dzhokhar Tsarnaev, the middle school language arts teacher seemed to fit the bill.

As O'Toole questioned 15 more prospective jurors Wednesday, they described a variety of conflicts that would make it difficult for them to sit on the jury.

One man, a retired software engineer, said he had formed an opinion that Tsarnaev is guilty based on the intense media coverage of the bombings. But he said he could put that aside and listen to the evidence at trial before making his final decision.

But then he said he believes the evidence is so overwhelming that "the possibility — the probability — of him being found innocent, it would approach zero."

Another prospective juror works for a company that provides emergency management systems that were used by Boston police during the marathon bombing and later in the week by the city of Watertown during an intense manhunt for Tsarnaev.

Another man works as a correctional officer at the Plymouth County House of Correction and guarded a friend of the Tsarnaev brothers who was held there while facing charges of lying to authorities about his contact with the Tsarnaevs around the time of the bombings. The man also said he believes Tsarnaev is guilty.