Milk driver kills 3 at Pa. schoolhouse

A Pennsylvania State Police helicopter flies over the one-room schoolhouse where a gunman killed three schoolgirls execution style and then shot himself dead, in Nickel Mines, Pennsylvania October 2, 2006. It was the third U.S. school shooting in less than a week. The shooter was identified as Charles Carl Roberts, a 32-year-old dairy truck driver. [Reuters]

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