May 2, 2008: Norman - Riverwind Casino has been evacuated due to a bomb threat tonight, a McClain County emergency dispatcher confirmed. Dispatchers for McClain County and the Lighthorse Police Department said authorities were on the scene, but they refused to provide further details. The casino's phone line rang unanswered tonight. Television station KFOR-4 reported an announcement was made over the casino's public address system asking patrons to leave the casino, and patrons were then asked to leave the property.