The State Department has warned Americans not to travel to Pakistan and evacuated nonessential government personnel from the country's second largest city because of a specific threat to the consulate there, a U.S. official said Friday, according to AP. According to U.S. Embassy spokeswoman Meghan Gregonis, the U.S. is shifting its nonessential staff from the consulate in the eastern Pakistani city of Lahore to the capital, Islamabad. Emergency personnel will stay in Lahore, and embassy officials do not know when the consulate will reopen, she said. "We received information regarding a threat to the consulate," said Gregonis. "As a precautionary measure, we are undertaking a drawdown of all except emergency personnel."