ISLA, Mexico (AP) — Hundreds of Central American migrants from a 4,000-strong caravan winding its way through southern Mexico and toward the U.S. border splintered off on their own Saturday after broken promises of bus transportation.

Patience appeared to be wearing thin among the exhausted trekkers after Veracruz Gov. Miguel Angel Yunes reneged on an offer Friday to provide buses to leapfrog the migrants to the Mexican capital. Tempers flared as the migrants struggled with exhaustion, blisters, sickness and swollen feet.

Caravan organizers have pleaded for buses in recent days after three wee...