Rescuers have found the bodies of 10 more workers who were trapped in a flooded highway tunnel in the southern Chinese city of Zhuhai last week.
State media reported that this increased the death toll to 13.
Rescuers have been unable to establish contact with one remaining worker trapped in the tunnel.
Rescue work is continuing.
On July 15, water suddenly leaked into the tunnel, which is being built under a reservoir, trapping 14 workers less than a mile from the entrance.
The accident was the second in the tunnel since March, when a collapsed wall killed two workers.
The tunnel is part of a major expressway in Zhuhai in Guangdong province, linking the coastal city to a bridge to neighboring Macau and Hong Kong.
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