Police in Montana arrested ex-NFL quarterback Ryan Leaf after a monthlong investigation that culminated with Leaf breaking into an acquaintance's home to steal prescription pain medication, the task force commander who led the probe said Saturday. Authorities believe Leaf may have broken into other homes in search of prescription drugs over the past 1½ years and are asking those victims to come forward, central Montana drug force Cmdr. Chris Hickman said. Leaf faced a similar accusation in 2008, when he was accused of burglarizing a player's home while he was a quarterbacks coach for Division II West Texas A&M. He reached a plea agreement that gave him 10 years' probation. The prosecutor in that case in 2009 said he'll file a motion Monday to revoke Leaf's probation following his Montana arrest. "I think it's sad," Randall County district attorney James Farren said. "While I hoped for better results, I'm not surprised it happened." Source: Associated Press