Divers on Friday pulled the last four bodies from the wreckage of a "duck boat" that sank in a storm in a Missouri lake, killing 17 people in one of the deadliest U.S. tourist incidents in recent years.

The World War Two-style amphibious vehicle was filled with 31 passengers including children when a microburst storm hit Table Rock Lake outside the tourist city of Branson, Missouri, on Thursday. A video of the incident showed it battered by waves.

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Officials pulled the bodies of four people from the sunken duck boat 80 feet under water, Ozarks Public Radio reported, citing Stone County Sheriff Doug Rader.

"It's important that we find out for sure what events did occur," Governor Michael Parson said at a Friday morning news conference. "Today it's just still early."

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The incident began around 7 p.m. local time on Thursday after thunderstorms rolled through the area, when two duck boats were out on the lake, officials said. Both headed back to shore but only one made it.