Two crew members on board a tanker anchored off Shenzhen in South China Sea have died from oxygen deficiency.
A third crew member was rescued and is receiving treatment at a local hospital, according to local maritime officials.
The three crewmen were trapped in the forepeak of Jin Wang You 9.
The rescue team ruled out the presence of toxic gas, but found high carbon dioxide content on the first deck of the tanker.
The investigation of the accident is under way, according to maritime officials.