The front section of an Iranian oil tanker that has been on fire for days off the east China coast has exploded.
Rescue boats are searching for 31 missing sailors and to retreat and sparking environmental concerns due to the oil spill.
Thirty-two crew members, including 30 Iranians and two Bangladeshis, went missing after the tanker carrying 136,000 tonnes of oil condensate from Iran to South Korea collided with a cargo Chinese freighter and caught fire last Saturday.
So far, no survivors from the tanker have been found and only one body has been recovered. All 21 crew members aboard the Chinese ship were rescued.