Luis Andres Cuyun , 30 , who ran Guatemala City facility in Las Gaviotas , shot dead by attackers who later said they were ordered to do the hit . Cuyun and his social welfare official companion fired back at the attackers . Juan Carlos Medina Luna , 29 , and Mario Alfonso Aguilar , 18 , arrested . Gang said that its members were abused inside Cuyun 's jail .
Luis Andres Cuyun , 30 , who ran Las Gaviotas facility in Guatemala City , shot dead by attackers who later said they were ordered to do the hit . Cuyun and his social welfare official companion fired back at the attackers . Juan Carlos Medina Luna , 29 , and Mario Alfonso Aguilar , 18 , arrested . Gang said that its members were abused inside Cuyun 's jail .