The discovery of a substance at a storage facility in Lehigh County has prompted the response of hazmat crews.

The crews were dispatched around 1:30 p.m. to 299 Schantz Rd. in Lower Macungie Township for the report of six one gallon containers of an unknown substance, emergency dispatchers said.

Schantz Road has been closed between Cetronia Road and Hamilton Boulevard, officials said.

Emergency dispatchers initially said that an area of a half-mile in all directions was evacuated as a precaution, but they later said that was not the case.