PITTSBURGH (KDKA) — Jordan Duckett was just 13 years old when he collapsed on a football field in Pittsburgh.

On Monday, the medical examiner said he died from severe asthma.

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Authorities responded to reports of an unresponsive boy at Chartiers Playground at Chartiers Avenue and Middleton Way in August.

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Duckett had been playing football and collapsed while running off the field.

He was a member of the Westside Mustang Youth Athletic Association Football team.

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Duckett was pronounced dead by doctors at UPMC Children’s Hospital.