Son of Boston police captain charged in terror bomb plot

Prosecutors have arrested the son of a Boston police captain in a plot to commit terrorist acts on behalf of the Islamic State group.

Alexander Ciccolo (chih-KOH'-loh) is accused in a criminal complaint unsealed Monday of receiving four guns July 4 from a person cooperating with the Western Massachusetts Joint Terrorism Task Force.

An FBI affidavit says the 23-year-old Adams resident had talked with the cooperating witness in recorded conversations about his plans to commit acts inspired by the Islamic State group, including setting off pressure-cooker bombs at an unidentified university. 

According to the affidavit, he said the attack would include executions of students broadcast live online.

Before his arrest, agents had observed Ciccolo buying a pressure cooker similar to those used in the 2013 Boston Marathon bombings.