DETROIT (Michigan News Source) – General Motors shut down production at its Factory Zero in Detroit and Hamtramck after lithium ion batteries sparked a fire and forced its closure on Tuesday night.

Fire officials are still investigating the fire at the 4.5 million square foot facility. No one was injured at the factory that builds the GMC Hummer all-electric pickup and SUV at the plant along with the Chevrolet Silverado EV work truck.

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The Detroit Free Press reports this is the second fire in recent months. In October, the Detroit Fire Department reported “an autonomous electric car fire” inside the factory that water sprinklers helped extinguish.

Roughly 1,880 people work at the factory.