A gunman opened fire on a center where immigrants were taking a citizenship class Friday in downtown Binghamton, killing 13 people before apparently committing suicide. Four people are in critical condition. The suspected gunman carried identification with the name of 42-year-old Jiverly Voong of nearby Johnson City, N.Y., a law enforcement official said.

But the name is an alias that the man has used in the past, said the official, who was not authorized to speak publicly and was talking on condition of anonymity. "It obviously was premeditated," said Binghamton Police Chief Joseph Zikuski, noting the gunman blocked the rear exit with his car. "He made sure nobody could escape."

Two handguns were found at the scene. Police did not mention a motive. Rep. Maurice Hinchey, whose district includes Binghamton, said the gunman had recently been let go from IBM in nearby Johnson City. The man entered a foyer at the American Civic Association and shot two receptionists, Zikuski said. One receptionist was killed, but another pretended to be dead, then crawled a desk and called 911, he said.

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