The Latest: Caravan of asylum seekers head to border rally

The Latest on a caravan of Central Americans seeking asylum in the United States (all times local):

10:05 a.m.

Central Americans in a caravan of asylum seekers that traveled through Mexico to the border with San Diego have filled five old school buses as they prepare to turn themselves in to U.S. authorities.

People left a downtown Tijuana migrant shelter Sunday where they have been staying. Asked how he felt as he boarded the bus, Nefi Hernandez replied, "Nervous."

Police with flashing lights escorted the buses through the streets of Tijuana to a cross-border rally on the beach, with supporters gathering on the U.S. side of a double-layer fence.

President Donald Trump and members of his Cabinet have been tracking the caravan, calling it a threat to the U.S.

The Central Americans will test the administration's tough rhetoric when they begin seeking asylum at San Diego's San Ysidro border crossing, the nation's busiest.

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10:30 p.m.

U.S. immigration lawyers are telling Central Americans in a caravan of asylum-seekers that traveled through Mexico to the border with San Diego that they face possible separation from their children and detention for many months. They say they want to prepare them for the worst.

The Central Americans will test the Trump administration's tough rhetoric criticizing the caravan when they begin seeking asylum Sunday at San Diego's San Ysidro border crossing, the nation's busiest.

President Donald Trump and members of his Cabinet have been tracking the caravan, calling it a threat to the U.S.

U.S. Customs and Border Protection says the San Ysidro crossing may be unable to take asylum-seekers if it faces too many at once, forcing people to wait in Mexico until it has more room.