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CLEVELAND (WJW) – HAZMAT crews responded to the scene of the Hertz Rental Car Lot at Cleveland Hopkins International Airport Wednesday morning.  

Just after 8 a.m., Hopkins Airport Fire/EMS and Cleveland Fire/EMS arrived at the car lot on reports workers became sick.

According to preliminary information from the Cleveland Division of Police, two employees who were cleaning a rental car became ill when they encountered an unknown substance.

The employees were taken to the hospital.

Hazardous materials crews responded to the scene along with the FBI.

After tests, Cleveland police tell FOX 8 it was determined the mystery substance was laundry detergent.