Conor McGregor has said he is ready to fight Khabib Nurmagomedov again despite violent scenes in Las Vegas after the Russian had defeated him.

Conor McGregor’s return to the UFC ended in misery and then shame as chaos enveloped the T-Mobile Arena in Las Vegas.

Two security guards have been shot dead while investigating a disturbance in a room at a hotel-casino in Las Vegas and the suspected gunman is critically injured after turning the gun on himself, police said.

Las Vegas authorities are standing by their timeline of the deadliest shooting in modern US history despite it being disputed by the hotel where the gunman opened fire.

Mandalay Bay hotel staff did not notify Las Vegas police about a shooting in a hallway until after Stephen Paddock opened fire on the crowd outside at a country music festival, a federal official said.

The hotel where the Las Vegas gunman was staying when he launched his deadly attack has cast doubt on a revised timeline of events set out by investigators.

Police have made a significant change to the timeline of the Las Vegas mass shooting, saying the gunman shot a hotel security guard before he opened fire on concertgoers.

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.

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.

President Donald Trump has met victims of the Las Vegas shooting in hospital and praised doctors for doing an "indescribable" job in treating them.

Declaring it a "very, very sad day" for himself and the nation, President Donald Trump has arrived in Las Vegas where a gunman killed 59 people at a concert.

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

“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."

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.

How very sad it is that the first-sentence reaction to Sunday’s mass murder at a concert in Las Vegas — at least 58 people killed, more than 500 injured — must contain the word “relief” but it seems unavoidable.

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 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.

For a man who calls himself ‘Money’ without any hint of irony, it is perhaps not surprising that Floyd Mayweather loves a bet.

The imminent meeting of Conor McGregor and Floyd Mayweather in Las Vegas, and the inexorable awfulness of the build-up, may have scaled new heights of nonsense but Sin City and the fight game have always been perfectly in step when it comes to the art of show business and bluster and the business of making money.

On Monday in Las Vegas, moments before the solar eclipse, rain began falling heavily on the Strip, unusual to say the least for the middle of August or indeed the middle of the desert.

A fire broke out on the roof of the Bellagio hotel and casino on Thursday night.

A man sitting at the back of a bus on the Las Vegas Strip opened fire "for no apparent reason" as passengers got off at a stop in the heart of the tourism corridor, police have said.

A man on a double decker bus on the Las Vegas Strip pulled out a gun and opened fire, killing one person and wounding another before barricading himself inside in a stand-off that lasted hours.

Perhaps the feline fittings were there to provide some home comfort for the man from Tiger’s Bay. True to much of the style of this city — the world capital of excess — it all looked a little much though.

A contractor knocked out power to a Las Vegas Strip casino resort, displacing thousands of guests and gamblers, trapping nearly a dozen people in lifts and prompting a room-to-room search of the 33-storey tower.

Could McGregor be fighting closer to home from now on?

A 20-year-old British man accused of attempting to shoot Donald Trump at a Las Vegas casino will plead guilty to lesser charges when he appears in court, his mother has said.

An Australian man who claims to hold a British royal title has been ordered by a judge to remain in jail in Las Vegas pending the resolution of multiple charges.

A woman holidaying in Las Vegas has won a whopping $10.7m on a slot machine.

A man with a UK driving licence who was arrested at a Donald Trump rally in Las Vegas told authorities he tried to grab an officer's gun in order to kill the US presidential hopeful, officials said.

A jury has been played wedding footage of a bride declaring her love for her new husband in Las Vegas, two months before she allegedly murdered him.

Two women have been killed and a man wounded in a shooting on the Las Vegas Strip.

Amir Khan will return to action against Saul ‘Canelo’ Alvarez in Las Vegas on May 7.

The Dublin fighter has chosen to move up a weight class and take on lightweight champion Rafael dos Anjos.

One person has been killed and dozens injured after a car smashed into pedestrians on a Las Vegas Strip pavement.

“Vegas was and is a hard town that will make you pay for your inability to restrain your desires... If you have a weakness, Las Vegas will punish you"

It seems like there were a few idiots on a flight from New York to Nevada last night.

Avenida Atlântica might just be the most picturesque thoroughfare on the planet. It’s only four kilometres long so the best way to appreciate the majesty of it all is to just get out and walk it.

This was more like it for Conor McGregor. Unfortunately for Jose Aldo, it was also a fresh reminder of how he is seen by his Irish rivals disciples.

The Black Donnellys have titled their newest song ‘Notorious’, after Conor McGregor’s nickname.

The company that made an engine that caught fire as a British Airways plane was taking off from Las Vegas is inspecting other engine parts.

An engine on a British Airways jet has caught fire while the plane was preparing to take off from Las Vegas, forcing passengers to escape on emergency slides.

An engine failure on a Las Vegas-to-London British Airways jet Tuesday resulted in a fire that forced the evacuation of the plane and resulted in 14 minor injuries.