Seven vessels helping clean Sanchi site

Area near ship blocked for precaution; no abnormalities found in samples

China is working to deal with spilled oil from the sunken tanker Sanchi and is investigating the accident with relevant parties, the Ministry of Transport said on Thursday.

"By the end of Tuesday, more than 225.8 square nautical miles (770 square kilometers) of affected waters had been restored," said Zhi Guanglu, deputy director of the China Maritime Search and Rescue Center under the ministry.