A staff member of Northeastern University in Boston, the U.S. state of Massachusetts, was injured after a package delivered to a building at the university exploded when it was opened Tuesday evening.A university spokesperson said the staff member "sustained minor injuries and is being treated."Boston police told reporters that the injured is a man in his 40s and that officers were called to the scene around 7:18 p.m. (2318 GMT).A second package was also found and rendered safe by the bomb squad, said the police.An investigation is underway as the Boston Division of the Federal Bureau of Investigation is coordinating with local law enforcement authorities.A staff member of Northeastern University in Boston, the U.S. state of Massachusetts, was injured after a package delivered to a building at the university exploded when it was opened Tuesday evening.A university spokesperson said the staff member "sustained minor injuries and is being treated."Boston police told reporters that the injured is a man in his 40s and that officers were called to the scene around 7:18 p.m. (2318 GMT).A second package was also found and rendered safe by the bomb squad, said the police.An investigation is underway as the Boston Division of the Federal Bureau of Investigation is coordinating with local law enforcement authorities.