LAS VEGAS (AP) — MGM Resorts International has sued hundreds of victims of the deadliest mass shooting in modern U.S. history in a bid to avoid liability for the gunfire that rained down from its Mandalay Bay casino-resort in Las Vegas.

The company argues in lawsuits filed Friday in Nevada and California that it has “no liability of any kind” to survivors or families of slain victims under a federal law enacted after the Sept. 11 terrorist attacks.

The lawsuits target victims who have sued the company and voluntarily dismissed their claims or have threatened to sue after a gunman shattered the windows of his Mandalay Bay suite and fired on a crowd gathered below for a country music festival.

High-stakes gambler Stephen Paddock killed 58 people and injured hundreds more last year before killing himself. Victims with active lawsuits against MGM don’t face the company’s legal claim.

MGM says the 2002 law limits liabilities when a company or group uses services certified by the U.S. Department of Homeland Security and mass attacks occur. The company says it is not liable because its security vendor for the concert, Contemporary Services Corp., was federally certified at the time of the Oct. 1 shooting.

MGM claims the victims — through actual and threatened lawsuits — have implicated CSC’s services because they involve concert security, including training, emergency response and evacuation.

“If defendants were injured by Paddock’s assault, as they allege, they were inevitably injured both because Paddock fired from his window and because they remained in the line of fire at the concert. Such claims inevitably implicate security at the concert — and may result in loss to CSC,” according to the MGM lawsuits.

CSC’s general counsel, James Service, did not immediately return a call seeking comment.

MGM wants a court to declare that the U.S. law “precludes any finding of liability” against the company “for any claim for injuries arising out of or related to Paddock’s mass attack.”

Brian Claypool, an attorney who was at the music festival during the shooting, called the lawsuits a “hypocritical maneuver” that will turn into a “public relations nightmare for MGM.”

“We collectively view this as a bullying tactic to intimidate the survivors who are rightfully seeking social change and redress through the litigation process,” Claypool, who represents dozens of victims, said in a statement.

MGM spokeswoman Debra DeShong said Congress determined that federal courts should handle any lawsuits over mass attacks where federally certified security services were provided.

“While we expected the litigation that followed, we also feel strongly that victims and the community should be able to recover and find resolution in a timely manner,” she said in a statement Tuesday.

Attorney Robert Eglet, who represents victims in a lawsuit pending in federal court in Nevada, also decried the casino operator’s move.

“MGM has done something that in over 30 years of practice is the most outrageous thing I have ever seen,” Eglet said. “They have sued the families of victims while they’re still grieving over their loved ones.”