No injuries were reported after a bomb went off in an empty classroom at the Yale University law school Wednesday, one day after the US government raised the nation's terror threat status to the second highest level.
Yale spokeswoman Dorie Baker said investigation was under way. "We don't know what kind of a device," she said. "It was in an empty classroom, not in the mailroom. All sources are agreed there were no injuries."
Karen Peart, another spokeswoman, said there was "limited damage." Students fleeing from the scene said a wall collapsed after the blast.
The explosion occurred shortly before 5 p.m. (2100 GMT) at the school in New Haven, Connecticut. Smoke could be seen rising from the building.
The Federal Bureau of Investigation dispatched its joint terrorism task force to the scene to investigate. But local television reports quoted US officials as saying that the explosion did not indicate or bear the marks of an international terrorist incident.
The US government raised the country's alert level to orange of the five-color assessment system from yellow, the middle level, Tuesday, citing increased "chatter" suggesting terrorists may be planning a major attack inside the United States.
(Xinhua News Agency May 22, 2003)
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