Smoke caused a scare in the emergency room of White Plains Hospital Friday.

News 12 is told that patients heard an announcement over the loud speaker around 11 a.m. claiming there was a "code red."

Hospital staff says they smelt smoke and thought there was a fire in the building. Emergency room patients were then transferred to other parts of the hospital as a precaution.  

News 12 is told there was no fire, but the smoke was caused by a malfunction in the air conditioning unit.

A hospital spokesperson told News 12 no one was injured.