BOSTON (AP) — Two men who were in the Boston area for college Halloween parties last weekend set off fireworks in a Harvard Medical School building, authorities said Tuesday in announcing their arrests.

Logan David Patterson, 18, and Dominick Frank Cardoza, 20, were arrested Tuesday morning on charges of conspiracy to damage by means of fire or an explosive. They were due in court later Tuesday.

Neither Patterson, who is from the Boston suburb of Plymouth, nor Cardoza, who is from the Cape Cod town of Bourne, had an attorney as of early Tuesday afternoon. Cardoza also didn't immediately respond to an Instagram message seeking comment.

The explosion happened early Saturday on the fourth floor of Harvard Medical School's Goldenson Building, which houses labs and offices associated with

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