Some 1,500 boys have been verified as child soldiers in Yemen, but the actual number of children who have been drawn into the war is probably far higher, dpa quoted a UN spokeswoman as saying Tuesday. Most of the boys were recruited by Houthi rebels over the past three years, spokeswoman Ravina Shamdasani said at a press briefing in Geneva. Recruiters often entice the boys by promising them financial rewards or social status. "Many are then quickly sent to the front lines of the conflict or tasked with manning checkpoints," Shamdasani said. All child soldiers in Yemen must be immediately released, the UN human rights office demanded.