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tails or elaborate on a motive.
• The wounded classmate, a 15-year-old girl, was in critical condition with a gunshot wound, Robinson said. Two other students were treated for minor injuries and released.
• ___

• DES MOINES, Iowa (AP) -- One of the largest jackpots in U.S. lottery history climbed even higher Saturday after no ticket matched all six numbers to win the $425 million top Mega Millions prize.
• With the Friday the 13th drawing failing to produce any winner lucky enough to claim the fifth-biggest jackpot ever, officials raised the amount to $550 million for Tuesday's drawing. That now ranks as the fourth-biggest.
• Paula Otto, the Virginia Lottery's executive director and Mega Millions' lead director, told The Associated Press early Saturday that she expects the amount to rise even higher before the drawing. It could approach or surpass the largest Mega Millions jackpot ever claimed, $656 million in March 2012. Had someone won Friday, it would have been that game's second-highest prize.
• "We've never had a jackpot at this level in December leading into the holidays," Otto said. "If we keep rolling, we could well be at a billion dollars going into Christmas."
• But each time the lottery fails to produce a jackpot, as it now has 21 straight times on this run, the pot gets even larger. That increases the number of tickets sold while decreasing the chances that nobody will win.
• ___

• MEXICO CITY (AP) -- This week's opening of Mexico's oil industry to private and foreign investment caps a remarkable series of legislative victories by a president trying to re-engineer the country's most dysfunctional institutions.
• Enrique Pena Nieto struck an unprecedented political deal with the two main opposition parties in his first days in office. Then he pushed through reforms meant to bring higher standards, greater openness and competition to the oligarch-dominated telecommunications industry, the education and tax systems, the banking system,

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