Peña Nieto called the confrontation a "unique incident," saying the migrants did not follow the protocols that Mexican immigration officials put in place in anticipation of the caravan. He added that some migrants "assaulted and even injured" a number of unarmed members of the Mexican police before they could contain the violence.
"Mexico won't allow anyone entering its territory in an erratic way and much less a violent way," he said Friday night in a video statement released on Twitter.