The state of Massachusetts, which has Boston as its capital, has not included the death penalty in its legal system since 1984. However, since this is an act of terrorism using a weapon of mass destruction, the case has risen to the of federal justice and capital punishment could be applied.
However, he made an agreement with the court, pleaded guilty to all charges and delivered 250 pounds of dynamite he had hidden. He got rid of the death penalty but was sentenced to two life imprisonment, without parole.
He is serving his sentence at the Penitentiary, Administrative Maximum Facility (ADX).