The son of a Boston police captain arrested this month and accused of planning to bomb a college cafeteria on behalf of the Islamic State militant group pleaded not guilty on Wednesday to criminal charges. Alexander Ciccolo, 23, was arrested on July 4 after illegally receiving four guns from a person working with the US Justice Department,
which had placed him under surveillance after his father alerted authorities to his activities. Ciccolo told an informant that he wanted to build bombs similar to those detonated at the Boston Marathon in 2013 and federal agents saw him buy a pressure cooker similar to the ones used in that attack, which killed three people and injured more than 260, according to federal prosecutors. Authorities also said they found partially built bombs at Ciccolo’s apartment that were filled with a mix of shredded Styrofoam and motor oil, a combination that federal prosecutors said Ciccolo believed would stick to victims’ skin, causing severe injuries.