GRAHAM, Wash. - The long, bizarre case of a Utah woman missing for two years took a horrific turn Sunday when a powerful house explosion killed the woman's husband and his two young sons, moments after the boys arrived for a visit that was supposed to be supervised by a social worker.

Authorities say it appears the husband, Josh Powell, blew the house up on purpose.

The Child Protective Services worker brought the two boys to Powell's home, and Powell let his sons inside - but then blocked the social worker from entering, Graham Fire and Rescue Chief Gary Franz told The Associated Press.

INDIANAPOLIS - The New England Patriots have kicked off to the New York Giants to begin the Super Bowl.

NFC teams had won the past 14 pregame coin tosses at the Super Bowl, but the AFC's New England did Sunday and deferred its choice until the second half.

The game is a rematch of the 2008 Super Bowl, when the Giants upset the Patriots 17-14, ending New England's bid for a perfect season.