Gainesville firefighters are investigating an ammonia leak this morning at Cargill at 862 W. Ridge Road.

Units responded at 8:30 a.m. and found that an ammonia line that was leaking in a mechanical room for the chillers, causing the alarm to sound, said Capt. Keith Smith, fire department spokesman.

Ammonia has been turned off to the line. The leak was contained to the mechanical room and didn’t cause any injuries, Smith said.

Firefighters are working “to ensure the area is clear and the leak secured,” he added.

Plant employees have otherwise returned to work.