Cargo containers filled with imports and exports from all over the world have been stuck at the Port of Nagoya following a ransomware attack on its networks early Tuesday morning.

The port is the largest in Japan and the central shipping hub for international carmaker Toyota. According to its operator, Nagoya Harbor Transportation, it received a ransom demand from LockBit 3.0 after a system failure on Tuesday at 6:30 a.m., the Japan Times reported.