By Lanford Beard
June 30, 2013 at 12:00 PM EDT

Sarah “Sassoon” Guyard-Guillot, a performer in Cirque du Soleil’s Las Vegas show , died after an estimated 50-foot fall during Saturday night’s performance. EW has confirmed with the Clark County Coroner’s Office that Guyard-Guillot, a 31-year-old mother of two, was pronounced dead at 11:43 p.m. Saturday night.

According to the Las Vegas Sun, audience members saw the Parisian-born Guyard-Guillot slip out of her safety cable after ascending a set piece during Ka‘s climactic Final Battle sequence. Guyard-Guillot’s is the first onstage death in the French-Canadian troupe’s 30-year history — though it was the second Vegas incident of the week: A performer in Michael Jackson: ONE slipped out of a rope, missed a protective landing pad, and suffered a concussion during Wednesday’s show at Mandalay Bay.

After Guyard-Guillot’s accident, audience members were immediately cleared out of the MGM Grand showroom and offered refunds or tickets for future shows. As for , all performances have been canceled until further notice as Cirque du Soleil works with the authorities to investigate Guyard-Guillot’s death.

“I am heartbroken,” said Cirque du Soleil founder Guy Laliberte in a statement. “I wish to extend my sincerest sympathies to the family. We are all completely devastated with this news. Sassoon was an artist with the original cast of since 2006 and has been an integral part of our Cirque du Soleil tight family. We are reminded, with great humility and respect, how extraordinary our artists are each and every night. Our focus now is to support each other as a family.”