 At the first report of the outbreak, and fearing an attack on Durango itself (Guadiana), Governor Gaspar de Alvear arrested 75 local Indian leaders and ordered them executed.In December he led an expedition traversing Tepehuán country and rescued 400 Spanish and Indian allies.Another expedition consisting of 67 Spanish cavalry and 120 Concho Indian allies set out from Guadalajara in March 1617 and engaged and won several battles with the Tepehuán.