Pheland said one of the students in the group told an adult right away. The police chief said there was never a threat against any Greece school, but police say through the investigation, they uncovered the plot that the three men and one teen had to harm a Muslim community.

Investigators say they have recovered 23 rifles and shotguns, all legal weapons, from multiple homes, and found three IEDs in the home of the 16-year-old suspect.

Authorities are continuing to go through other electronic devices. The FBI will investigate the homemade bombs in Quantico, Virginia.

Chief Phelan said it's possible federal charges will be filed.

Watch Tuesday's news conference in its entirety below:

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