Hundreds of migrants have waded into a river on the southern Mexico border as they try to reach the United States.
The migrants, mainly from Honduras, took to the water after being refused permission to cross a bridge over the Suchiate river.
Mexican National Guard troops with riot shields tried to stop the migrants from climbing the river bank.
But hundreds appear to have breached police lines and entered Mexico.
The migrants were camped out in the Guatemalan town of Tecun Uman, across the border from Mexico's Ciudad Hidalgo.
Eight representatives of the migrants were allowed into Mexico for talks with the authorities and to pass a letter on to President Andres Manuel Lopez Obrador.