The search resumes Monday for a missing 15-year-old swimmer in Northwest Indiana.
Corey McFry was about 200 yards from shore with friends near the Indiana Dunes when a big wave and strong undertow pulled him under, police said. One of the friends was able to swim to shore and scream for beachgoers to call 911.
"Corey was standing out on a sandbar with three other friends and either stepped or was knocked off by a wave," said Gene Davis, an Indiana conservation officer. "He went under and never resurfaced."
Boats and helicopters turned out Sunday to search Lake Michigan for the boy, but there was no sign of him.
Waves were five to seven feet tall at the time, according to the U.S. Coast Guard, and rip current warnings made it difficult for rescue teams to search the water.
"We're just trying to get closure and be able to put him to rest," said Mark McGregor, the fiancee of Corey's mother.
Wind and waves continue to be a concern as crews search, but an official told NBC Chicago conditions are improving by the minute.
"If the lake dies down a little bit, we'll try to deploy side-scan sonar and possibly get some divers in the water," a U.S. Coast Guard spokesman said.