GEORGETOWN COUNTY, S.C. (WCBD/WBTW) –- Four people were hurt Tuesday afternoon in a boat crash near the Yauhannah Bridge on the Great Pee Dee River in Georgetown County, authorities said.

The Georgetown County Sheriff’s Office initially said the boat crashed into the bridge, but the South Carolina Department of Natural Resources later said the boat hit something in the water, but it’s unclear what was hit or what caused the crash.

“The boat was traveling down the river when it struck something,” said Stephen Fastenau, media and outreach official for SCDNR. “Not able to say what the boat struck at this point. That’s still under investigation.”

Four people on the boat were reportedly injured in the crash. One of the people injured was flown to a hospital, according to SCDNR. All of the people injured are expected to survive.

Fastenau said injuries ranged from minor to serious. Serious injuries included broken bones and a punctured lung.

No other information was immediately available.