A Haitian policeman stands guard in Port-au-Prince, capital of Haiti, January 28, 2010. [Xinhua]

Haitian policemen search for runaway prisoners in Port-au-Prince, capital of Haiti, January 28, 2010. The Haitian government and the United Nations are working together to capture more than 4,000 prisoners who escaped from Haiti's jails in the wake of the January 12 devastating earthquake. [Xinhua]