Rescuers search for victims at the accident site after a sleeper coach fell off the Jingzhou Yangtze River Bridge in Jingzhou, central China's Hubei Province, March 12, 2013. At least 14 people were killed and nine injured during the the accident which happened at around 7:00 p.m. Tuesday when a flat tire caused the coach to break through the guardrail at the southern end of the bridge and hit the ground underneath the structure. Rescue work is under way. (Xinhua/Shi Jiuyong) 

Rescuers carry a victim of a traffic accident as a sleeper coach fell off the Jingzhou Yangtze River Bridge in Jingzhou, central China's Hubei Province, March 12, 2013. At least 14 people were killed and nine injured during the the accident which happened at around 7:00 p.m. Tuesday when a flat tire caused the coach to break through the guardrail at the southern end of the bridge and hit the ground underneath the structure. Rescue work is under way. (Xinhua/Shi Jiuyong)

Rescuers carry a victim of a traffic accident as a sleeper coach fell off the Jingzhou Yangtze River Bridge in Jingzhou, central China's Hubei Province, March 12, 2013. At least 14 people were killed and nine injured during the the accident which happened at around 7:00 p.m. Tuesday when a flat tire caused the coach to break through the guardrail at the southern end of the bridge and hit the ground underneath the structure. Rescue work is under way. (Xinhua/Shi Jiuyong)

This video grab captured on March 12, 2013 shows a sleeper coach which fell off the Jingzhou Yangtze River Bridge in Jingzhou, central China's Hubei Province. The accident happened at around 7:00 p.m. Tueday when the sleeper coach fell off a road bridge after a tyre burst. More than 20 passengers, most of whom are migrant workers, are still trapped in the coach as rescuers are deployed to the accident scene. (Xinhua)

Rescuers conduct a rescue operation at the accident site after a sleeper coach fell off the Jingzhou Yangtze River Bridge in Jingzhou, central China's Hubei Province, March 12, 2013. At least 14 people were killed and nine injured during the the accident which happened at around 7:00 p.m. Tuesday when a flat tire caused the coach to break through the guardrail at the southern end of the bridge and hit the ground underneath the structure. Rescue work is under way. (Xinhua/Shi Jiuyong) 

Photo provided by a local newspaper on March 12, 2013 shows a sleeper coach which fell off the Jingzhou Yangtze River Bridge in Jingzhou, central China's Hubei Province. The accident happened at around 7:00 p.m. Tuesday when the sleeper coach fell off a road bridge after a tyre burst. More than 20 passengers, most of whom are migrant workers, are still trapped in the coach as rescuers are deployed to the accident scene. (Xinhua)