By: KDKA-TV News Staff

PITTSBURGH (KDKA) – A long-time Pittsburgh firefighter has lost his battle with COVID-19.

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Mike Mullen, who retired just a few months ago, died on Wednesday morning.

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Mullen had retired from the bureau in November after 41 years of service.

He was diagnosed with COVID-19 and placed on a ventilator but died after a week.

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He was 65 years old.