Most or all of Magdalena de Kino's inhabitants were killed.
In November 1757, Seri natives attacked and killed thirty-one civilians.
Captain Francisco Ignacio de Trespalacios discovered the massacred colonists during a campaign from Presidio Santa Cruz de Terrenate with eighty-three cavalry men.
Ignacoi replaced the fallen commander, Francisco Tovar, after the First Battle of Terrenate.
The Spanish Army estimated that around forty Apaches had looted the settlement, murdered the inhabitants and burned the church.