CARACAS, Venezuela (AP) — A riot erupted at a prison in central Venezuela on Friday, leaving about 20 casualties, including a National Guard officer who was wounded by an explosion and the warden, who suffered a knife wound, authorities said. Officials indicated there were some deaths, but gave no figures. The violence at the Llanos Penitentiary Center resulted in an armed confrontation between inmates and guards, lawmaker María Beatriz Martínez told The Associated Press.Read more on NewsOK.com