Warwick resident Nicholas Rovinski, who authorities say is also known as Nuh Amriki and Nuh al Andalusi, faces charges for conspiracy to provide material support to a terrorist organization.
Federal authorities allege the 24-year-old conspired with two other men, David Wright and Usaamah Abdullah Rahim, who was shot dead by authorities in Boston last week. Rahim was suspected of plotting to harm police officers.
According to an affidavit, the men were planning an attack they believed would support the objectives of the Islamic State of Iraq, or ISIS.
They allegedly planned to behead a New York resident who hosted a conference featuring cartoons of the Prophet Muhammad. The affidavit says they later changed their plans, deciding to attack "boys in blue," which authorities interpret to mean police officers.
Rovinski was arrested on Thursday night at his home in Warwick and is expected to appear in federal court in Boston on Friday afternoon.
He faces a maximum sentance of 15 years in prison and a fine of $250,000.