A deadly shoot-out left three dead on the Las Vegas strip early on Thursday morning, after an unidentified man in a black Range Rover opened fire on a Maserati at a traffic light, sending it crashing into a taxi that burst into flames.
The attack occurred at the Las Vegas and Flamingo boulevards, the site of several major casinos, including Bellagio, Caesars Palace and Bally's.
British tourist Mark Thompson, from Manchester, told AP: "This doesn't happen where we come from, not on this scale.
"We get stabbings, and gang violence, but this is like something out of a movie. Like `Die Hard' or something."
A Range Rover Sport with tinted windows that fled the scene is being sough by police. The Maserati hit the taxi cab, which went up in flames, and the driver and passenger were killed. The male driver of the Maserati also died, and his passenger was shot.
Las Vegas Police Sgt John Sheahan told the BBC: "We have a lot of pieces to put together to establish a timeline as to why this confrontation occurred.
"We have numerous detectives checking resorts on the Strip south of this intersection."
Four casualties were taken to the University Medical Center hospital, three of whom were treated and released, a spokeswoman for the facility told the BBC.
One person, whose condition was not released, remained in hospital.