(CNN) — Two men were arrested following an explosion this weekend at Harvard Medical School, according to the FBI’s Joint Terrorism Task Force and the Harvard University Police Department.

Logan David Patterson, 18, and Dominick Frank Cardoza, 20, both ofo Massachusetts, were arrested and charged with conspiracy to damage by means of fire or an explosive a building belonging to an institution that receives federal financial assistance, according to a criminal complaint. It’s unclear whether the two have attorneys.

They were arrested Tuesday morning at their homes, said Ted Docks, special agent in charge at the FBI’s Boston division. Members of the public had called authorities to identify them after police released surveillance camera images, said Leah Foley, the US attorney for the d

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