CHICAGO (CBS)–Authorities in northwest suburban Wauconda say one of two boys who fell overboard from a paddle boat Friday evening is still missing.

Fishermen on Bangs Lake heard screaming and were able to pull one of the boys, a 10-year-old, to safety. Another boy, 9, who also fell overboard, has not been located, fire officials said.

Authorities said the search for the 9-year-old has switched to a recovery mission.