The man called the police emergency hotline at 10 AM Tuesday morning and said the plant would be attacked later Tuesday afternoon, the daily Fuldaer Zeitung reported. On Monday, a man had also called in an anonymous threat against the factory.

Police could not definitively say whether Tuesday’s caller was the same as Monday’s.

The plant’s grounds were closed though it was uncertain whether the buildings had been evacuated. About 500 employees were forced to leave the facility Monday while police used trained dogs and a helicopter to search the facility for explosives. No sign of a bomb was discovered.

The factory’s late shift couldn’t come into work Monday afternoon as the searches were still ongoing and production only resumed with the night shift. The Fuldaer Zeitung reported that the factory remained open Tuesday, despite the renewed bomb threats.