A hazardous goods container exploded today aboard a cargo ship docked at China’s busy Ningbo port.

Fortunately, no casualties or injuries have been reported so far. The explosion occurred on the YM Mobility ship, igniting a fire that has since been brought under control. All crew members on board were safely evacuated without incident.

The Liberia-flagged vessel had arrived in Ningbo after its last port of call in Shanghai, as per MarineTraffic tracking data. According to a post on Chinese social media by state-owned port operator Ningbo-Zhoushan, the ship was docked at the Beilun 2 container terminal at the time of the explosion.

Both Yang Ming and the port operator stated that the exact cause of the explosion remains unclear. Yang Ming noted that the owner of the container had declared the goods as requiring dry, cold storage, with no need for electrical power, according to a translated statement from the company.

Despite the explosion, the incident did not seem to cause significant disruptions to major shipping lines.

Ningbo-Zhoushan, situated in Zhejiang province, is China’s second-busiest port. It follows Shanghai, the world’s largest port, and Singapore, according to Lloyd’s List.