Lieutenant Colonel Domingo Monterrosa speaks to a crowd of civilians during a military operation in Botejon, San Miguel department, El Salvador, September 5, 1984. Three weeks after this visit, Monterrosa was killed along with 13 other Salvadoran army soldiers while the soldiers were retrieving a booby trapped FMLN radio transmitter on October 23, 1984 in Joateca, Morazán department. FMLN guerrillas led by Joaquín Villalobos, who had previously denounced Monterrosa and his command authority over the Atlacatl Battalion for carrying out the December 1981 civilian massacre in El Mozote, claimed responsibility for the helicopter crash.