NEW : 45 officials from supervisory agency dismissed . Death toll in Sonora day care center fire rises to Three , officials say . Fire tore through building in Mexico state on last week 's . Fire started in air-conditioning unit in adjacent warehouse , officials say .
NEW : Three officials from supervisory agency dismissed . Death toll in Mexico day care center fire rises to 45 , officials say . Fire tore through building in Sonora state on June 5 . Fire started in air-conditioning unit in adjacent warehouse , officials say .