Investigators have met the brother of the Las Vegas gunman while friends and relatives of the 58 killed and other concert-goers returned to the scene to reclaim shoes, phones and bags left behind in the panic as they fled.

The brother of a man who killed dozens of people at a Las Vegas country music festival has arrived in Nevada to help investigators work out the gunman's motives and to retrieve the body.

A note has been found in the Las Vegas gunman's hotel room, showing calculations of where to aim to maximise casualties.

Police investigating the Las Vegas mass shooting have said they are still no closer to working out what drove Stephen Paddock to commit mass murder.

Investigators still have not found a motive for the Las Vegas shooting rampage that killed 58 people, Undersheriff Kevin McMahill has said.

Latest: A US coroner has released the names of all 58 victims of the Las Vegas shooting last week.

Investigators are looking into whether gunman Stephen Paddock scoped out bigger music festivals before shooting scores of country music fans in Las Vegas.

The "bump stocks" device that the Las Vegas gunman used to turn semi-automatic rifles into fully automated weapons should be "subject to additional regulations", the National Rifle Association has said.

Latest:The Las Vegas gunman who killed 58 people in the deadliest mass shooting in modern US history stockpiled weapons and ammunition over decades.

Senior Republicans are open to considering legislation banning "bump stocks" like the gunman in Las Vegas apparently used to effectively convert semi-automatic rifles into fully automated weapons.

New York City Police Commissioner James O'Neill said: "We do understand that no city or town in this country is completely immune to such unbridled hatred."

Natalie Vanderstay was shot in the stomach and had her leg ripped apart by shrapnel.

Through tearful stories of last moments together and in heart-wrenching tributes, relatives and friends have been remembering the dozens of people killed in the shooting massacre on the Las Vegas strip.

LATEST: As he prepared to travel to Las Vegas, Donald Trump said it was a "sad day".

A bill to ease laws on the purchase of gun silencers is gaining momentum even as the US reels from the horror of one of the deadliest killings in its history, writes Bette Browne.

“I ended up in the kitchen of the Irish bar in the hotel. My mam and dad and mother-in-law where under tables. Everyone was screaming, running and crying."

A book of condolence will be opened today at Cork City Hall for the family and friends of those who died in the Las Vegas shooting.

Latest: Through tears and in heart-wrenching tributes, relatives and friends are remembering the dozens of people killed in the shooting massacre on the Las Vegas strip.

The man who killed 59 people and injured 527 others in a mass shooting in Las Vegas was a big-spending gambler who took 23 guns into his hotel room before opening fire on crowds attending an outdoor music festival.

The Las Vegas shooter Stephen Paddock was a big-spending gambler who was found dead with as many as 10 guns in his hotel bedroom after the deadliest mass shooting in US history.

“He saved my life and lost his,”

The Department of Foreign Affairs issued a contact number for families in Ireland who have concerns about relatives to ring the consular assistance unit on +353 1 408 2527.

The gunman responsible for the worst mass shooting in modern US history is believed to be a grandfather who lived in a remote desert home.

Jason Aldean, the country star who was performing as a shooting took place at a concert in Las Vegas, has issued a statement to express his horror and confirm he and his crew escaped the shooting unharmed.