Explosion during construction in tunnel in China's Guizhou province... 5 workers killed = Chinese report

An explosion occurred inside a tunnel under construction in Guizhou Province, China. According to an announcement from the authorities, the attack occurred at noon on the 10th (currently
(local time), an explosion occurred in a railway tunnel under construction, trapping six workers. After the accident occurred, local authorities activated emergency measures and dispatched fire and police personnel to carry out rescue operations.
I went to work. All six people trapped were rescued, but five of them were confirmed dead. The other person was taken to a hospital and is receiving treatment.
Residents who live near the accident site said, ``We heard two explosions, and a fire burst out from inside the tunnel for a moment.
Dozens of cars rushed by. Rescue operations continued until 8pm or 9pm.'' According to local media reports, the tunnel where the explosion occurred is 4.1 kilometers long. The site is a geological structure
The area was said to be complex and prone to gas generation. A detailed investigation into the cause of the accident is currently underway.