An ammonia leak was reported at a Tyson Foods poultry processing plant in New Holland, Pennsylvania.

According to a statement released by the company, the release of ammonia occurred early on the morning of May 30. The leak took place at a time when the plant was not in operation, and no injuries were reported.

Emergency responders were paged to the scene. Hazardous materials (Hazmat) teams controlled the leak and then ventilated the building. They were on the scene for about 4.5 hours, reported Lancaster Online.

The company stated on the morning of May 31 that it planned to resume normal operations at the plant later in the day.

Tyson Foods, headquartered in Springdale, Arkansas, is the largest broiler company in the United States. According to the WATTAgNet Top Poultry Companies Database, Tyson Foods processed 33.41 million chickens on a weekly basis in 2015.