A subway or train line that was constructed for the Beijing Olympics had given way and four workers lost their lives in this freak accident. The construction company waited for 8 hours before reporting to the officials.

The bodies of three workers who apparently suffocated after the tunnel collapse had been recovered by Sunday, the official Xinhua News Agency said. The body of a fourth worker could not immediately be recovered, it said. Two workers remained missing.

Hope that the missing workers are OK.

Via Washington Post, Terrorism Research Center