investigators say it was stephen papaddock. and he was not on their radar.hy did he create what president trump is calling an act of pure evil. hillary vaughn is live in las vegas with much more. what's going on in that city right now? reporter: pa paddock's family hd no idea he had an arsenal of guns in his home. law enforcement is hoping to get answers from paddock's girlfriend, marilou danley. they say he is still under investigation. authorities are sending a s.w.a.t. team to paddock's second home in reno. but here is what they got from his home outside vegas. they found 18 additional firearms. explosives. they took computer hard drives they say the fbi is going to look into. they found ammonia nitrate in his car. that's a substance used to make explosives. there are questions about how he got several guns into his hotel room. he packed them into suitcase. a source tells fox news that paddock has purchased 30 guns in his lifetime. officials say they have identified self gun dealers who has done business with paddock. chris owens said paddock did not rais