A boater is still missing Sunday after an empty boat was found on Lake Monona Friday, officials said.

The Dane County Sheriff's Office said several citizens called at 7:15 a.m. on Fiday to report an unoccupied boat adjacent to the John Nolen Drive shoreline.

The Dane County Sheriff’s Office Marine and Trail Enforcement deputies responded to find the empty boat, which contained indicators a fisherman had been on board, according to a news release. Deputies were able to confirm the boat was launched from a nearby landing on Thursday.

About 10 hours after the initial call, the sheriff's office said detectives and marine and trail enforcement deputies searched Lake Monona all day without finding the missing boater.

The boat did not appear to have damage and there was no evidence it was involved in a collision, officials said.

The family of the missing boater has been notified and sheriff’s office personnel will continue search efforts to locate the missing boater, the news release said.

Officials said Saturday night the boater was still not found, and they will continue to search Lake Monona on Sunday.