Officials restarted a search Tuesday morning for a boater who went missing after a sharp turn threw him from the craft he was test driving on Fox Lake Monday, near Antioch on the Chain O’ Lakes.

[ See more photos of the search for missing boater ]

Christopher Covelli from the Lake County Sheriff’s Office said that two men were test-driving a boat Monday afternoon when the driver took a turn too fast, throwing both men from the boat. One man was rescued by a passing boat, but was injured trying to get back on the out-of-control boat as it circled. The injuries were not considered life-threatening.

The missing man was operating it at the time of the incident and was also the person considering its purchase, Covelli said, adding neither man was wearing a life vest.

Searchers, including a sonar team from the Illinois Department of Natural Resources, are currently staging in the area of Captain’s Quarters, 38283 North Bolton Place, Antioch, Conservation Police Sgt. Todd Semenik said. The Antioch Fire Protection District has divers on the scene, he said.

The Lake County Sheriff’s Office is providing assistance on the scene, Covelli said.