By MICHAEL CASEY and LEAH WILLINGHAM, Associated Press

BOSTON (AP) — Two Massachusetts men have been arrested in connection with a weekend explosion at Harvard Medical School, authorities said Tuesday.

The FBI’s Boston office announced the arrests on social media ahead of a 1 p.m. news conference. It didn’t provide further details.

The explosion occurred early Saturday on the fourth floor of Harvard Medical School’s Goldenson Building. No one was injured. The building houses labs and offices associated with the school’s neurobiology department.

Esta fotografía, proporcionada por el Departamento de Policía de la Universidad de Harvard, muestra a una persona que las autoridades buscan en relación con una explosión ocurrida en la Facultad de Medicina de Harvard en Boston, el sábado 1 de

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