NEW : The woman who made the threat may have mental issues , an official says . A man was arrested after he threatened to kill a New York City police officer and his wife on Monday, officials said. No bomb is found and the scene in Washington is now clear , the official adds . But US Airways ' express flights -- like the one from Dayton -- are experiencing delays as a result of the incident , airline spokeswoman Tina Swail said . The threat was made in person at a ticket counter in Dayton , Ohio . 44 passengers who safely deplaned are being questioned , an airport official says .
NEW : The woman who made the threat may have mental issues , an official says . A man was arrested after he threatened to kill a New York City police officer and his wife on Monday, officials said. No bomb is found and the scene in Washington is now clear , the official adds . The threat was made in person at a ticket counter in Dayton , Ohio . 44 passengers who safely deplaned are being questioned , an airport official says .