The cohort crossed into Chiapas state before dawn without needing the wrist bands that officials on Thursday gave migrants to wear until they could register with authorities, several migrants and an official told Reuters.
"The road today was open," said Marco Antonio Cortez, 37, a baker from Honduras traveling with his wife and children, ages 2 and 9. "They didn't give us bracelets or anything, they just let us pass through Mexico migration."
A migration official at the entry point, who asked not to be named because she was not authorized to speak to media, said that at least 1,000 people crossed from Guatemala into Mexico by around 5 a.m., without needing wrist bands.
Migration officials did not reply to requests for comment on why the wrist bands were not required on Friday.
The migrant group proceeded on foot alongside cars on a highway, accompanied by federal police officers, arriving at a shelter in the city of Tapachula around midday.
Sitting by the side of the road rubbing cream onto his children's feet, 40-year-old Honduran migrant Santos Pineda said he and his family entered Mexico easily, and without having to provide documents or wear any wrist bands. The family's plan was to press on to the United States, he said.