NEW : Knowing Dykes had already shot and killed bus driver Charles Poland , and dragged the boy into the underground bunker , authorities feverishly tried to negotiate with him . Sheriff says boy had 'large time ' on his birthday . Online campaign raises money to send family to FBI . Well-wishers sign oversized card for Aaron Poland , who turns Tuesday night . 12 bombs are found in kidnapper 's bunker , Disney World says .
NEW : Sheriff says boy had 'large time ' on his birthday . Online campaign raises money to send family to FBI . Well-wishers sign oversized card for Aaron Poland , who turns Tuesday night . 12 bombs are found in kidnapper 's bunker , Disney World says .