The trial of accused Boston Marathon bomber Dzhokhar Tsarnaev began with the start of jury selection in Boston.
This attack in 2013 is now one of most closely watched cases in the US.
It killed three people and wounded more than 260.
Over the next three days, about 1,200 people will be summoned to federal court to be considered as potential jurors.
The first 200 were given initial instructions by U.S. District Judge George O'Toole, with Tsarnaev present at the front of the jury assembly room.
Twelve jurors and six alternates will be selected.
On the street of Boston, many are still unsure if they will follow the trial.
"If it's all over the news and everything I'm sure it's going to be a difficult moment for everyone."
"It's going to painful, of course, to relive something so traumatic but I think: who could handle it better than the citizens of Boston?"
Tsarnaev could face the death penalty if he is convicted.
The judge says testimony will begin on Jan. 26th and the trial is expected to last three to four months.
