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Son of Boston police captain charged in ISIS-inspired terror plot

BOSTON -- The son of a Boston police captain has been arrested in an FBI sting and accused of plotting to commit terrorist acts in support of the Islamic State of Iraq and Syria (ISIS), including the setting off of pressure-cooker bombs at an unidentified university and the slaughter of students live online.

Sources told CBS News that Ciccolo's father, Police Capt. Robert Ciccolo, turned his son in to authorities after noticing a serious change in his behavior. His son has a history of mental illness and he's been in and out of treatment facilities since a very young age, the source said. The father and son are estranged.

Ciccolo, 23, of Adams, was accused in a criminal complaint unsealed Monday with illegal possession of a firearm for receiving four guns July 4 from a person cooperating with the Western Massachusetts Joint Terrorism Task Force. Because of a drunken driving conviction, Ciccolo was barred from possessing a gun.

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Authorities say Alexander Ciccolo took four guns from a person who was cooperating with members of the Western Massachusetts Joint Terrorism Task Force. U.S. Attorney's Office

Ciccolo's father, Robert Ciccolo, is a 27-year veteran of the Boston police.

"While we were saddened and disappointed to learn or our son's intentions, we are grateful that authorities were able to prevent any loss of life or harm to others," Ciccolo's parents said in a statement.

In court papers, the FBI said Ciccolo had talked with the cooperating witness in recorded conversations in June about his plans to commit acts inspired by the Islamic State.

Ciccolo initially talked about killing civilians, police officers and members of the U.S. military, but later said he instead wanted to attack a state university outside of Massachusetts because more people would be at a school, according to the FBI. The FBI said the attack would include executions of students, broadcast live online.

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Alexander Ciccolo. CBS Boston WBZ via Napanee Beaver

On July 3, the day before his arrest, agents watched Ciccolo at Wal-Mart buying a pressure cooker similar to those used in the 2013 Boston Marathon bombings, the FBI said.

His attorney, David Hoose, did not immediately return calls for comment.

Ciccolo first came to the attention of the terrorism task force on Sept. 11 last year, when a close acquaintance - identified by the two law enforcement officials as Ciccolo's father - told the FBI that Ciccolo "had expressed a desire to go overseas and fight for ISIL," according to court papers.

The acquaintance told the FBI that Ciccolo had a long history of mental illness and in the last 18 months "had become obsessed with Islam." The person also told the FBI he had received texts from Ciccolo in which he said America was "Satan" and Americans were disgusting.

The FBI said Ciccolo told the cooperating witness he planned to attack the university using assault rifles and explosives, focusing on dorms and the cafeteria during the lunchtime because it would be packed with people.

He also allegedly said that if a student was a Muslim, "he would be permitted to help, sit tight or leave." Ciccolo told the witness that the Boston Marathon bombing gave him the idea of using pressure-cooker bombs, the FBI said.

Capt. Ciccolo was supervising more than two dozen officers in Kenmore Square during the Marathon bombings, CBS Boston reported.

Ciccolo is scheduled to appear in federal court in Springfield on Tuesday for a bail hearing.