DENVER
03/18/2010 05:12 am ET | Updated May 25, 2011

Coroner: Teen may have had irregular heartbeat

HIGHLANDS RANCH, Colo. (AP) - A coroner says a teen who collapsed and died during a Highlands Ranch High School fun run probably died of cardiac arrhythmia, or irregular heartbeat.

The Araphaoe County autopsy report says 15-year-old Quinton F. Sanford died of natural causes.

The report, dated Dec

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