One person was killed and another 30 were injured when a woman intentionally swerved her car on to a busy pavement on the Las Vegas Strip, mowing down pedestrians.

An argument at a Las Vegas hotel triggered a shoot-out that left three people dead and at least six injured, police said.

Rap music mogul Marion "Suge" Knight is facing a March court date in Las Vegas following his arrest on a 2009 traffic warrant and a new misdemeanour drug charge, authorities said.