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Sencion filed for bankruptcy protection in January 2009, listing more than $42,000 in outstanding debts for a car, several credit cards and some medical expenses. The case was discharged four months later.

A lawyer representing some of Sencion’s family members called the shooting “an aberration of his character.”

Associated Press writers Michelle Rindels, Oskar Garcia, Ken Ritter and Cristina Silva in Las Vegas and Martin Griffith and Scott Sonner in Carson City contributed to this report.