NEW : A fifth hostage is still alive , Colombia 's defense minister says . Colombia : President Juan Manuel Santos calls the attack a ` ` crime against humanity '' The hostages were reportedly shot in the head and the back . ( CNN ) -- A military operation earlier this month killed former FARC leader Alfonso Cano .
NEW : A fifth hostage is still alive , Colombia 's defense minister says . Colombia : President Juan Manuel Santos calls the attack a ` ` crime against humanity '' The hostages were reportedly shot in the head and the back . A military operation earlier this month killed former FARC leader Alfonso Cano .