A Syrian refugee mother of four, desperate to receive food aid, set herself on fire at a UN registration centre in the Lebanese city of Tripoli on Tuesday, witnesses said. The UN refugee agency (UNHCR) confirmed the incident, adding that the woman in her 50s had been hospitalised suffering severe burns. Abu Riad al-Amudi, a cart vendor who often works near the UN registration centre in the **rthern city, said that as hundreds of refugees queued for food aid Tuesday morning, a woman dressed in black from head to toe began to shout. "She said: 'For three days I have been coming here to get food assistance for me and my four children.