Dozens of people were injured when a speedboat full of tourists crashed into a concrete post off the coast of Thailand in a popular resort area on Wednesday.

At least 36 people were injured when the speedboat full of 39 travelers from Russia, Kazakhstan and China slammed into a channel marker less than a mile offshore in Phuket’s Chalong Bay, Bangkok Post reported

Officials say it’s possible that the boat’s captain fell asleep shortly before the crash. 

The vessel, named Thanathip Marine 555, was reportedly returning to the popular tourist destination of Phuket from the Phi Phi Islands when the crash occurred around 5:30 p.m.

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Thailand boat crash

At least 36 people were injured when a speedboat crashed into a mile marker in Thailand on Wednesday. (Viral Press)

Thai Coast Guard members pulled wounded tourists to safety and rushed them to nearby hospitals. 

Police are investigating claims that the boat's captain dozed off before the crash and are awaiting test results on his blood-alcohol level.

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Thailand boat crash

Thai Coast Guard members help injured passengers off the crashed speedboat. (Viral Press)

"I don't know how the crash happened," a Thai passenger said, according to Viral Press. "The boat was driving normally, and suddenly there was a loud noise that jolted us."

Of the injured, six people are said to have suffered severe injuries including broken bones, 16 had "moderate" injuries and 15 had "minor" injuries. 

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Thailand boat crash

The boat crash took place in the popular tourist region of Phuket. (Viral Press)

"The injured passengers were 21 Russians, nine Kazakhs, a Hong Kong citizen, a Chinese tourist, a Ukrainian and four Thai locals," Phuket Governor Narong Woonciew said.