The Palmer Police Department received the call just after 6:30 p.m. according to Sergeant Scott Haley.
The McDonald’s restaurant is located on Thorndike Street in Palmer.
Haley told ABC40 News, “There was some type of leak from the heating air conditioning equipment, and it was leaking CO into the building. The fire Department and the police department evacuated the building and a worker was sent to Wing Memorial Hospital to be checked out.”
Restaurant customers were also checked out at the scene by emergency responders.
Haley says the restaurant will remain closed until the situation has been fixed.