LAS VEGAS, July 1: A performer died after an accident during a Cirque du Soleil show in Las Vegas, authorities and the company said yesterday. Sarah Guillot Guyard, 31, a member of the cast of the “KA” show at the MGM Grand hotel and casino, was pronounced dead shortly before midnight on Saturday, the Clark County Coroner’s office said. The cause of death has yet to be determined. (agencies)