Off-duty Chicago police officer shot and killed in 'unprovoked' ambush attack

msn.com - 03-24

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An off-duty Chicago cop was shot an killed in an ambush attack early Saturday, authorities said. Officer John Rivera, 23, and another man were shot in a car around 3:30 a.m. shortly after leaving a restaurant. The two assailants approached, and one pulled a gun and began firing into the car.