In retaliation, the Quechans (Yuma) and their allies attacked and destroyed the installation and the neighboring Mission Puerto de Purísima Concepción during a three-day period, from July 17–19, 1781. Some 50 Spaniards, including Father Garcés (along with three other friars and Captain Fernando Rivera y Moncada) were killed, and the women and children taken captive. The Indians' victory closed this crossing and seriously crippled future communications between Las Californias province and colonial Mexico, both within the Viceroyalty of New Spain.
