U.S. Headlines

• Hospitals treat more than 140 after Okla. tornado

  OKLAHOMA CITY (AP) — Officials at two hospitals say they've been treating more than 140 patients, including about 70 children, since a massive tornado hit suburban Oklahoma City.

• Oklahoma twister tracked path of 1999 tornado

  NEW YORK (AP) — Monday's powerful tornado in suburban Oklahoma City loosely followed the path of a killer twister that slammed the region in May 1999.

• Twister season starts late, but starts nonetheless

  TULSA, Okla. (AP) — Deadly tornadoes that have raked communities in Middle America over the past week, including Monday's massive twister that carved a path of destruction through the Oklahoma City suburb of Moore, belie what had been a relatively quiet start of the 2013 tornado season.

• More Obama aides knew of IRS audit; Obama not told

  WASHINGTON (AP) — White House chief of staff Denis McDonough and other senior advisers knew in late April that an impending report was likely to say the IRS had inappropriately targeted conservative groups, President Barack Obama's spokesman disclosed Monday, expanding the circle of top officials who knew of the audit beyond those named earlier.

• Huge tornado hits Oklahoma City suburb, kills 51

  MOORE, Okla. (AP) — A monstrous tornado at least a half-mile wide roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. At least 51 people were killed, and officials said the death toll was expected to rise.