Red Cross ends search for missing Highland Park hiker

SAN JOSE, Costa Rica -- After thoroughly searching the inside of a volcanic crater, Red Cross rescuers are ending their hunt for a suburban Chicago man who disappeared in a national park in Costa Rica.

Possible human remains were spotted in a crater Monday, but officials on Thursday said what they thought was a body ended up being red foam.

Friends and family of David Gimelfarb are continuing to search for the 28-year-old doctoral student in psychology, who grew up in Highland Park.

Costa Rica Red Cross President Miguel Carmona says his agency has spoken with Gimelfarb's family and they appreciated the efforts that have been made to find him.