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...