Warrants served in New Jersey, Pennsylvania as feds look into possible NYC terrorism

Federal agents on Monday served search warrants in New Jersey and Pennsylvania as investigators probe a possible act of terrorism tied to explosive devices thrown during a protest in New York City.

A New York Police Department source told Fox News that devices hurled into the crowd were packed with nuts, bolts and screws, and contained a chemical substance inside a taped canister fitted with a fuse.

Emir Balat and Ibrahim Kayumi, who were arrested on Saturday, remained in custody as federal teams searched their homes in Bucks County, Pennsylvania, according to federal sources.

Investigators also executed a warrant at a related address in New Jersey.

Other federal sources told Fox News on Monday morning that a “terror investigation” is now underway after confirmed improvised explosive devices and a suspicious device were discovered near Gracie Mansion over the weekend.

Sources said the two suspects, Balat and Kayumi, allegedly made pro-ISIS statements while in custody.

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Investigators are also examining their past travel, including trips to Turkey and potentially other locations known as terror training grounds.

This is a breaking news story; check back for updates.