The Consumer Electronics Show opens in Las Vegas later today showcasing new technologies in areas as diverse as cars and gaming, smart phones and wearable technology.
The conference website says it is expecting more than 150,000 people to attend from more than 150 countries.
The four-day show is not open to the public and often provides a first glimpse of new products and emerging trends in technology.
A performer with the circus group Cirque du Soleil has died during a performance at the MGM Grand venue in Las Vegas, NBC reports.
Sarah Guyard-Guillot, 31, was pronounced dead shortly before midnight on Saturday, but the cause of death has yet to be determined.
An audience member told the Las Vegas Sun that the performer fell almost 50 feet from a wire into a pit below the stage, and that he could hear "screaming" and "groaning".
Cirque du Soleil said in a statement that the group was "heartbroken" and that the tragedy was a reminder of "how extraordinary our artists are each and every night".
Sergeant John Sheahan has confirmed that a Black Range Rover sport and a Maserati had stopped at a red light on the Las Vegas strip when the Range Rover opened fire on the Maserati.
Both cars went through the intersection. The Maserati hit a taxi. The driver and passenger of the taxi were killed after the taxi caught fire.
The driver of the Maserati died from gunshot wounds and the passenger was wounded. The Range Rover then fled the scene. Three other vehicles were involved.
Sergeant John Sheahan at the Las Vegas Metropolitan Police Department has described the gun fight which lead up to a huge crash which killed three people on a busy junction.
He said a "rolling gun battle" preceded the crash.
At least a further three people were hospitalised, including a passenger from the Maserati.
A tourist who witnessed the aftermath of the crash told KLAS-TV that the burning taxi looked like a fireball.
More people may be hurt, Sergeant Sheahan said.
It is the latest in a series of violent actions on the tourist corridor since the beginning of the year. Two people were critically wounded in a shooting at a parking garage 6th February, and a tourist was stabbed in an elevator at The Hotel at Mandalay Bay ten days later.
Three people were killed and at least three injured in a gun battle between moving vehicles that ultimately crashed at a busy intersection on the Las Vegas Strip, police have said.
A total of five vehicles were involved in the crash, including a taxi that burst into flames and killed two people around 4.30 am local time, at Flamingo and Las Vegas boulevards, said Sergeant John Sheahan.
People in a Maserati and an SUV were exchanging gunfire before the Maserati hit the taxi, he said.
The Maserati driver, the taxi driver and a taxi passenger were killed.
Driverless cars are being displayed at the world's biggest technology show in Las Vegas.
Google has been trailing its driverless cars for over two years but now the likes of Lexus, Audi and Volvo have produced their versions, bringing the technology one step closer to the roads. Lewis Vaughan Jones reports:
Car makers are all showcasing their latest driverless models in Las Vegas. But will consumers be tempted to let a computer take the wheel?Read the full story ›
Audi's self-parking car uses ultrasound and on-board cameras to perform tricky manoeuvres without the need for human control.
Its 'park assist' system can handle parallel and perpendicular parking and notifies the driver with a dashboard message once it finds a space large enough.
More from CES 2013: Robot allows doctor to check on hospital patients remotely
In the future, patients in hospital may be attended to by robots instead of doctors or nurses. The invention will allow doctors who are not at the hospital to remotely check up on and speak to patients using a videolink.
Other gadgets include smart phone apps that keep track of the user's heart rate and blood pressure.
These are just some of the health-related inventions being showcased at the Consumer Electronics Show (CES) in Las Vegas.
ITV News' correspondent Lewis Vaughan Jones reports: