The bus hit the parked truck, flipped on its left side and skidded for five meters, killing 13 people on the spot including Indians and Bangladeshis yesterday, police said.
The 30-seater minibus with Sharjah number plate was carrying 27 workers to their worksite in Jebel Ali when it hit the rear of the truck on Emirates Road, a busy route that connects the capital Abu Dhabi to the north of the UAE.
All the 10 Indians killed were from Bihar, an official from the Indian Consulate here told PTI.
Some injured Indian and Bangladeshi workers were taken to Rashid and Al Baraha Hospitals for treatment.
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The mangled wreckage of the bus had to be cut open to free the victims, said Lt Col Ahmed Atiq Burqibah, deputy director of rescue at Dubai Police.
"It's definitely the biggest accident so far this year," he was quoted as saying in local media. "So many people died and so many others were injured. It was a big disaster."
Further investigations are on.
Expatriates, many of them Asian, make up the great majority of Dubai's 2.2 million population.