Emergency crews respond to the Roosevelt Field Mall on June 20, 2013 (credit: Sophia Hall / WCBS 880) Emergency crews respond to the Roosevelt Field Mall on June 20, 2013 (credit: Sophia Hall / WCBS 880)

GARDEN CITY, N.Y. (CBSNewYork) – Emergency responders in Nassau County were on the scene of a carbon monoxide poisoning at Roosevelt Field Mall Thursday morning.

Ambulances, fire trucks and Nassau County hazmat teams rushed to the mall before it even opened for business, WCBS 880′s Sophia Hall reported.