Workers at a Dr. Pepper Bottling Plant in southwest Houston had to be evacuated after a chemical leak, according to Houston firefighters.

The hazmat team responded to a call for help at the plant on Holly Hall Street and Almeda Road just after 11:30 p.m. Wednesday.

Crews found a piece of machinery that was leaking ammonia. 

The leak was capped and fixed. 

Large fans had to be used to clear the air in the bottling area. 

After three hours, workers were able to return to their stations. 

No one was hurt.