Central American migrants traveling through southern Mexico toward the U.S. on Tuesday fearfully recalled their frantic escape from police the previous day, scuttling under barbed wire fences into pastures and then spending the night in the woods after hundreds were detained in a raid.

In the Chiapas state town of Tonala, migrants flocked to one of the few places they felt they could be safe — the local Roman Catholic church — only to start with fear at the sound of a passing ambulance’s siren.

Read more at Associated Press News.