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

Logan David Patterson, 18, and Dominick Frank Cardoza, 20, were taken into custody Tuesday on charges of conspiracy to damage by means of fire or an explosive.

Hours later, they were escorted into U.S. District Court in Boston in handcuffs as relatives of at least one of them looked on. Judge Jessica Hedges asked if they understand the process, and both said they did. She then ordered them released pending trial and forbid them from possessing explosives or visiting Harvard while free.

Neither Patterson, who is from the Boston suburb of Plymouth, nor Cardoza, who is from

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