The brother of the Las Vegas shooter said that he was a normal guy who must have 'snapped' before carrying out the worst mass shooting in American history.

In an exclusive interview with DailyMail.com, Eric Paddock said that 'something happened' to make his brother Stephen kill 59 and injure 527.

Eric said that there was 'absolutely no indication he could do something like this' and said that Stephen had no political or religious affiliation.

He said: 'He was just a guy. Something happened, he snapped or something'.

Speaking from his home in Orlando, Florida, Eric said: 'We know absolutely nothing, this is just, we are dumbfounded.

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PICTURED: The man suspected of killing 59 and injuring more than 527 when he opened fire on concertgoers Sunday night has been identified as Stephen Paddock - while Marilou Danley, his companion, has been located overseas.

Eric Paddock is seen here out side his home Monday morning, (left) and on Facebook (right)

The gunman's brother Eric Paddock (pictured left, with Stephen, right, in an undated photo) said that 'something happened' to make his brother Stephen kill at least 59 people and injure 527.

'We have absolutely no idea. Our condolences go to the victims and all their families'.

Eric said that he and Stephen, 64, lived on different coasts - Stephen's last address was in Mesquite, Nevada - and that they did not speak that often.

He added that his brother had 'no political affiliation, no religious affiliation, as far as we know'.

ISIS has claimed responsibility for the shooting, but are as yet to offer any proof.

Police are yet to find any evidence that Stephen had been radicalized by the terror group during a search of his home.

Las Vegas Sheriff Joseph Lombardo described the gunman as 'a sole actor, a lone-wolf-type actor.' He said a motive for the shooting had not yet been determined.

Despite being found amid an arsenal of weapons, Eric said that his brother had never been 'an avid gun guy at all', adding that he was at a loss as to where Stephen got his arsenal of automatic weapons from.

'He has no military background,' he added to CBS News. He said he believed his brother had a couple of handguns and maybe a rifle but didn't own automatic weapons when he moved him from Melbourne to his home at 1372 Babbling Brook Court, Mesquite, which Stephen bought in 2015.

“Not an avid gun guy at all...where the hell did he get automatic weapons? He has no military background,” gunman’s brother says pic.twitter.com/EMSKLQGYFM — CBS News (@CBSNews) October 2, 2017

Eric seemed stunned by his brother Stephen's actions in Las Vegas last night

Eric added that he and his brother weren't close but his family were in a state of shock after the mass shooting

Hope she's not involved: Eric Paddock, the shooter's brother, said of Marilou Danley: 'She has nothing to do with this, at least from my perspective.'

A body lies under a sheet on The Strip in Las Vegas as police secure the area after 58 people were killed on Sunday

Police confirmed that 59 were killed and 527 injured after the Sunday shooting at the Las Vegas music festival

Three people lie on the ground, one covered in blood, after the shooting at the Route 91 Harvest country music festival on Sunday

'He had a couple of guns but they were all handguns, legal,' Eric said. 'He might have had one long gun, but he had them in a safe.'

Eric, who acknowledged he and Stephen weren't close, painted his brother as just a typical Las Vegas guy.

'He's just a guy who lived in Mesquite who drove down and gambled in Las Vegas and... liked burritos,' he told the network.

Eric appeared in a state of shock during the interview, fighting back tears and barely able to speak in full sentences.

'He was my brother and it's like an asteroid fell out of the sky,' he told CNN.

'There is no reason we can imagine why Stephen would do something like this,' he added. 'We have no idea how this happened.'

'We have no idea. We're horrified. We're bewildered and our condolences go out to the victims.'

He last communicated with his brother a couple of weeks ago during Hurricane Irma, when Stephen texted him to check of their mother was OK after she lost power in the storm. Stephen also spoke with his mother directly about a week ago.

He said that his mother was also 'in shock' and struggling to cope with the news.

He said: 'Our family is OK, we're sitting in here in our house hoping that everyone doesn't attack us.

'My mother is 90 years old, lives down the street from me, we're just completely dumbfounded. You can imagine how this is affected her.

A police officer takes cover behind a police vehicle during the shooting near the Mandalay Bay resort and casino (left); people take cover at the Route 91 Harvest country music festival (right)

'He's my brother, we don't have a very close relationship but we talk occasionally. There's no rhyme or reason here, it makes no sense'.

Eric said he was relieved to learn the gunman hadn't hurt his girlfriend Marilou Danley, 62, who was living with Stephen in Mesquite.

'That's why I was on the phone with the cops,' he added. 'We were worried he might have hurt her too.'

Danley, who has a private pilot's license, does not appear to have been involved in the shooting and was in the Philippines when the shooting took place, authorities said.

Eric added: 'She has nothing to do with this, at least from my perspective.

'He was just a guy. Something happened, he snapped or something, he was just a guy.

'He has no political affiliation, no religious affiliation, as far as we know. This wasn't a terror attack'.

Police believe said Stephen Paddock opened fire on a crowd of 22,000 people attending the Route 91 Harvest Festival on the famous Vegas Strip, from his hotel room at the Mandalay Hotel on Sunday evening.

Country music star Jason Aldean was still on stage when the shooting began.

Police confirmed that 58 people were killed and another 515 were hurt in the shooting.

The gunman killed himself as cops burst into his room.