CIUDAD HIDALGO, Mexico _ A caravan of Central American immigrants started walking north into Mexico early Sunday, continuing their journey to the U.S. border.
More than 1,000 immigrants set out before dawn on the only road out of the small Mexican border town of Ciudad Hidalgo, headed for the city of Tapachula about 18 miles away.
A federal police helicopter circled and a large contingent of federal police officers was blocking the road several miles ahead.
It was unclear whether the police planned to stop the group. On Friday and Saturday, officials watched as hundreds of migrants illegally crossed the Suchiate River, which forms the border between Guatemala and Mexico.
Mexican President Enrique Pena Nieto, under pressure from U.S. President Donald Trump to stop the caravan, has said no migrants will be allowed to enter the country in an "irregular" manner.
Caravan organizers told the marchers that they must be nonviolent if they encounter police.
"They said we have to go peacefully," said Alex Pineda, 22, a migrant from Honduras.
