Bunker fuel may now be leaking from NITC's sunken suezmax Sanchi.

The 164,000-dwt tanker went down in the East China Sea with the loss of all 32 crew on Sunday after a collision.

China’s State Oceanic Administration said on Thursday that several previously unreported slicks were spotted by planes, vessels and satellites, according to Reuters.

One may indicate leakage of fuel.

The ship may have been carrying about 1,000 tonnes of bunkers at the time of the accident involving a CoscoCS bulker.

Most of its 136,000-tonne condensate cargo has evaporated.

The Financial Times reported that China is readying robots to explore the hull of the vessel.

The operation will also include surface ships and divers.

It could lead to holes being plugged in the hull.