Three crew members have been killed in a reported carbon dioxide leak on a car carrier in China.

Two other seafarers who were affected by the leak remain under treatment.

The incident occurred on the South Korean-owned 5,150-ceu Sang Shin (built 1994) at 4.30pm local time (09.30 GMT) on Monday.

The vessel was docked in a shipyard on Changtu Island in Daishan.