The UN refugee agency, UNHCR, sounded the alarm on Tuesday over a sharp rise in Sudanese refugees fleeing into eastern Chad, with nearly 20,000 people, mostly exhausted and traumatized women and children, arriving in the past two weeks alone.

Magatte Guisse, UNHCR's representative in Chad, told a UN briefing in Geneva that the largest influx has been at the Tine border crossing in Wadi Fira Province, where almost six-thousand people arrived within just two days.

To speak to us about this, is Eujin Byun, UNHCR global spokesperson..