By Lisa Redmond Lowell Sun LOWELL, Mass. — Daniel J. Rondeau must have thought he hit the jackpot when he allegedly rummaged through an unlocked car and discovered an iPad and a Blackberry. But the 19-year-old Dracut man would soon learn he picked the wrong car. Lowell police Officer Christopher Purtell was getting ready to drive to work at 12:47 a.m. Tuesday when he went back into his Chapman ...

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