gift-wrapped package address u.s. treasury secretary steven mnuchin home posh los angeles neighborhood suspect bomb instead fill horse manure police tell local media package find saturday even next-door neighbor driveway bel air los angeles police department tell los angeles time knbc television nbc affiliate los angeles package also include christmas card negative comment president donald trump new u.s. tax law sign trump last week reuters could reach lapd officials comment sunday lapd bomb squad x-ray package open find horse manure inside police tell local media aerial footage knbc show officer investigate large box wrap paper dump large amount late identify manure open card include inside mnuchin knbc say home package discover former goldman sachs group inc executive hollywood film financier road bel air close two hours knbc report u.s. secret service also investigate incident accord tv station treasury secretary mnuchin send gift-wrapped box horse manure report