02/26/2012 01:48 pm ET

Chicago Police Officer Dies On Duty

A 25-year Chicago Police veteran was believed to have suffered a heart attack while on duty this morning and died after being taken to a downtown hospital, police said.

The officer, Preston Ross Jr., 48, was on-duty at the Grand Avenue stop of the CTA Blue Line when he suffered some sort of medical emergency about 9 a.m., according to Police News Affairs.

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