(NEWSER) – So how did the FBI manage to kill Jimmy Lee Dykes and free his 5-year-old hostage from an underground bunker in Alabama? CBS News provides some details: Authorities waited until Dykes climbed a ladder in his underground bunker to retrieve supplies left by the FBI at the entrance. When Dykes reached up to open the door, which put him in an awkward position, agents dropped in stun grenades and barged in. Dykes reportedly fired and missed, and agents returned fire, killing him. Authorities found crude homemade bombs in the bunker, say the network's sources.