The search will resume at 8:00 a.m. Saturday.
Crews were out for three hours searching the waters. The search began at 6 p.m. after someone reported hearing an ice fisherman yelling for help 300 yards from land. It was dark at the time and the eyewitness said they could not make out that person visually.
The McHenry County Fire Protection dispatched units to the scene which included a dive team. They found evidence that an ice fisherman may have been in the area where the calls for help were heard.
"The initial reports were unclear where he was. The Fox Lake boat had to come out and try to locate where the person had gone to the water. It took us a little while to figure out where the person went to the water," said Chief Tony Hueman, McHenry County Fire Protection District.
The officials say they also found ice fishing equipment in the area where they found clothing.
There are no missing persons reports that have been called into authorities, but at this time, officials do believe they are searching for a fisherman based on the eyewitness account, the conversation that eyewitness had with the person in the water, as well as the clothing and the ice fishing equipment recovered at the scene.