NEW YORK (CBSNewYork) – Richard Sheirer, who was head of New York City’s Office of Emergency Management during the 9/11 attacks, died this morning.

Sheirer died of an apparent heart attack while driving to work.

As OEM chief during the aftermath of the 9/11 attacks, Sheirer played a critical role in securing the city and boosting anti-terror efforts.

Sheirer was named head of OEM by former Mayor Rudolph Giuliani in 2000. After leaving the OEM, Sheirer became a senior vice president at Giuliani Partners.

Prior to heading OEM, Sheirer served in the FDNY for 20 years.

Sheirer lived on Staten Island.

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