>> Nearly 48 hours after the horrific massacre in Las Vegas, and investigators still won't say or they don't know the motive behind the shooting that left 59 people dead and hundreds injured at a country music concert.>> We are making progress, but I don't have complete answers.>> A senior Homeland Security official telling Reuters that local investigators have found no evidence that the shooter, Steven Paddock, had any contacts with foreign or domestic extremist groups.
And reviews of his history show no underlying pattern of law breaking or hate speech. What they do know is that the shooting was clearly premeditated and that an arsenal of 42 weapons was discovered in the shooter's hotel room and home. Reuters Alexandria Sage is in Mesquite, Nevada.
>> The house behind me is where Stephen Paddock lived. This is a person who is so reclusive that his neighbors here in this tiny cul de sac around me didn't even know him. One thing he did do, apparently, was tip very well when his pizza was delivered to his door.
He always has a nice, fat tip. But beyond that, no substantive details as to what was driving him.>> On Tuesday, the brother of the shooter once again speaking to reporters trying to make sense of how his brother Stephen could have been the man behind the worst mass shooting in modern US history.
>> Steve is a, was a highly intelligent, highly successful person. He could have done anything he wanted to do.>> And now investigators are focusing on how exactly Paddock managed to pull this off. The gunman fired on concert goers for more than a thousand feet away with either fully automatic weapons, or guns legally modified to act like them.
Nevada has some of the loosest gun laws in the country, and allows residents to own machine guns if they're permitted under federal law. The state does not require licenses, registration, or waiting period for firearms, including semi automatic rifles.