HOLLAND, Mich. (WZZM/AP) -- Employees were forced to evacuate an L.G. Chem building after the odor of natural gas filled the plant.

The gas leak happened around 1:45 p.m. Friday in the 800 block of East 48th Street.

A utility company was called to investigate the source of the leak.

LG Chem halted production in September after saying a chemical used to make batteries may not have been registered with the U.S. Environmental Protection Agency.

The EPA said it didn't order the shutdown but had issued a subpoena on LG Chem, seeking to learn what chemicals are used at the factory. Production had begun in July in Holland in western Michigan.

The Holland Sentinel reports that LG Chem says the first shipments from the factory are expected in November.

LG Chem drew attention during its 2010 groundbreaking, when President Barack Obama traveled to Michigan for the event.