Two Massachusetts men are in custody following an explosion that shook Harvard University’s medical campus early Saturday morning. Logan D. Patterson, 18, Dominick F. Cardoza, 20, were arrested Tuesday morning for their alleged involvement in the explosion, Massachusetts U.S. Attorney Leah B. Foley said. Authorities had been searching for two individuals seen running from the Goldenson Building, which houses the school’s neuroscience research labs, moments after the blast. Surveillance footage circulated by investigators showed one person wearing a gray ski mask, and the other in a face mask and black hoodie. The explosion, which resulted in minimal damage and no injuries, is thought to have been “intentional,” feds say. Harvard officials expressed relief that the situation was contained q

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