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MONROE, N.C. -- At least one person is injured after a wreck involving an ambulance and a tractor-trailer near Carolinas Medical Center Union late Tuesday morning.

The incident took place next to the hospital located at 600 Hospital Drive off Highway 74 and Venus Street in Monroe around 11 a.m.

The ambulance flipped on its side duing the crash, and the 18-wheeler veered off the road in front of a Bojangles.

It's unclear what caused the wreck.

Stay with NBC Charlotte and WCNC.com for more information on this developing story.

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