2 0 0 9 , ▁the ▁F AR C - EP ▁announced ▁that ▁they ▁would ▁release ▁Army ▁Corpor al ▁Pablo ▁Em ilio ▁Mon c ay o ▁Cab rera ▁to ▁P ied ad ▁C ór dob a ▁as ▁a ▁human itar ian ▁gesture . ▁Mon c ay o ▁was ▁kid n apped ▁on ▁ 2 1 ▁December ▁ 1 9 9 7 . ▁On ▁ 2 8 ▁June ▁ 2 0 0 9 , ▁the ▁F AR C ▁announced ▁that ▁they ▁would ▁release ▁Professional ▁Sold ier ▁Jos ue ▁Daniel ▁Cal vo ▁San chez . ▁Cal vo ▁was ▁kid n apped ▁on ▁ 2 0 ▁April ▁ 2 0 0 9 . ▁Cal vo ▁was ▁released ▁on ▁ 2 8 ▁March ▁ 2 0 1 0 . ▁Mon c ay o ▁was ▁released ▁on ▁ 3 0 ▁March ▁ 2 0 1 0 . ▁ ▁On ▁ 1 3 ▁June ▁ 2 0 1 0 , ▁Colomb ian ▁troops ▁res cu ed ▁Police ▁Colonel ▁Luis ▁Her l indo ▁M endi eta ▁O val le , ▁Police ▁Captain ▁En rique ▁Mur illo ▁San chez ▁and ▁Army ▁Serge ant ▁Arbe y ▁Del g ado ▁Arg ote ▁in ▁an ▁event ▁known ▁as ▁Operation ▁Ch ame le on , ▁twelve ▁years ▁after ▁the ▁individuals ▁were ▁captured ; ▁Arg ote ▁was ▁kid n apped ▁on ▁ 3 ▁August ▁ 1 9 9 8 . ▁O val le ▁and ▁San chez ▁were ▁kid n apped ▁on ▁ 1 ▁November ▁ 1 9 9 8 . ▁On ▁ 1 4 ▁June ,