William Alberto Zapata Zapata, also known as Daniel or Yeison, ringleader of a criminal organization known as Autodefensas Gaitanistas was sentenced to 22 years in prison for the murders of brothers Iván Alejandro and Olier Monsalve perpetrated in rural area of Carolina del Príncipe (Antioquia).
On August 25, 2009 the victims were killed by means of guns and machetes at La María village by the armed group who accused the victims of being cattle rustlers. As a result of these facts, Juan Carlos Monsalve a nephew of the deceased victims was injured.