Joseph Garguilo
CBS Boston screenshot

A Holliston, Mass., man was arrested under suspicion of stockpiling weapons and ammunition in order to carry out attacks against law-enforcement officers, Muslims and even President Barack Obama, Time reports.

Joseph Garguilo was arrested Saturday after authorities said FBI agents raided his home and uncovered parts for an AR-15 rifle, ammunition, chemicals that could make explosives when combined and threatening notes. As Time reports, the Massachusetts U.S. Attorney's Office said there was already a restraining order out against Garguilo, one that also forbids him from having weapons.

He is facing charges of being a prohibited person in possession of ammunition.

According to Time, the letters and notes that were uncovered at Garguilo's home included threats to "chain a mosque closed and burn it down," as well as to "plant a bomb in police station [sic] … and kill as many homeland security officers as he can before they kill him."

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CBS Boston reports that the FBI said that another person tipped them off that Garguilo had spoken of wanting to attack a mosque and/or kill President Obama. Garguilo, the person alleged, commented that he should have attempted to kill the president while he was golfing on Martha's Vineyard.

If convicted, Garguilo faces up to 10 years in prison and a $250,000 fine, Time notes.

The suspect was ordered held without bail Monday afternoon, CBS Boston reports.

Read more at Time and CBS Boston