A suspected prank shut down a McDonald's in Lexington Friday morning.
The fire department was called to the McDonald's on South Limestone just after 3 a.m..
Fire officials said employees told them someone called business and told them they needed to test their fire suppression system.
Employees pulled a pin located on the wall that then dumped a fire-suppressing chemical all over the kitchen.
That forced the closure of the business as it was cleaned up.