Fifty-five Chinese sailors are believed to have lost their lives when their nuclear submarine became ensnared in a trap designed to target British sub-surface vessels in the Yellow Sea.

According to a confidential report from the UK, the crew members perished due to a catastrophic failure of the submarine’s oxygen systems, leading to the poisoning of the entire crew.

55 Chinese sailors feared dead in nuclear submarine accident in Yellow Sea, says report comes via ChinaTechNews.com.