Chinese nuclear submarine disaster: all but one crew died, Yellow sea

For at least a month rumors have been circulating in social nets, claiming the deaths of the entire crew of Chinese People’s Liberation Army Navy.nuclear submarine 093-417 in Yellow sea, sometime in late August. Seems like rumors are confirmed, and all but one 56 crew have died. Submarine got caught in an underwater trap aimed at US and allies submarines, made of cables and chains. 093-417 got entangled in this trap, and sent a diver to assist submarine release. When he completed the task and returned, he was met with dead silence. It is with great efforts that the Navy ships managed to surface submarine, with 55 dead crew, including Skipper and 22 officers.
According to Chinese sources, death was caused by air system’s oxygen sulfide poisoning, while submarine, astonishingly, wasn’t equipped with proper gas detectors.
Diver surfaced and was rescued, he is reportedly, in a deep depression. Beijing dnied this accident and related rumors, but recent top brass resigns, arrests and shuffles are attributed, partially, to 093-417 disaster.
Chinese People’s Liberation Army Navy.nuclear submarine 093-417 of 093 type, displacement 6096, speed 30 knots, complement 100 max, armament torpedoes, anti-ship missiles.