( CNN ) -- Colombian military forces killed 18 leftist guerrillas Friday in two operations , the National Defense Ministry said . Another 13 members of the Colombian Revolutionary Armed Forces ( FARC ) were captured and two more were `` demobilized '' in the attacks by the air force and special forces troops , which took place in a rural area of Vista Hermosa in the central department , or administrative district , of Meta . There , air force jets bombarded encampments capable of housing 200 people and belonging to Gang 43 of FARC , the ministry said in a posting on its Web site . After the bombing , special forces troops surrounded the camp and began fighting with the FARC forces . They found 25 rifles , explosives and `` information of interest to military intelligence , '' the posting said . Friday 's actions are part of an offensive against FARC in Meta and the southern department of Caqueta to find those people responsible for the death of Gov . Luis Francisco Cuellar , who was kidnapped and killed December 22 in Florence , Colombia , by FARC members , the posting said . `` The successes confirm that , in spite of cowardly and sporadic terrorist acts of this organization , the state continues landing serious blows and dismantling what remains of the terrorist structure , '' Defense Minister Gabriel Silva said . On Wednesday , the army seized 1¾ tons of cocaine in Puerto Escondido in the department of Cordoba , it said . During 2009 , the Ministry of Defense reported capturing more than 200 tons of cocaine worth $ 5 billion . For its part , the national army reported in its annual report that during 2009 it was involved in 1,200 fights that `` permitted the neutralization of 1,348 terrorist actions and the occupation and destruction of 1,172 encampments , many of which were used as laboratories to process cocaine . FARC has been at war with the Colombian government for more than 40 years . Although the government says the FARC 's military force has been severely compromised in recent months , authorities still accuse it of trafficking huge quantities of cocaine to finance its insurgency . Security analysts say FARC has about 9,000 to 12,000 armed guerillas and several thousand supporters , mostly in rural areas . The guerrilla group was established in 1964 as the military wing of the Colombian Communist Party . The guerrillas operate mostly in Colombia but have carried out extortion , kidnappings and other activities in Venezuela , Panama and Ecuador , according to the Federation of American Scientists Intelligence Resource Program .
Colombian military : 18 leftist militants killed in two attacks . Air force and special forces attacked FARC in Córdoba department , military says . Military : 1¾ tons of cocaine seized Wednesday in Cordoba department . More than 200 tons of cocaine worth $ 5 billion seized in Colombia , military operation .