US rapper Travis Scott is facing multiple lawsuits after at least eight people were killed and hundreds injured in a crush at his Texas festival Astroworld.
One injured concertgoer has accused Scott and surprise performer Drake of inciting the crowd, and is seeking $1 million in damages.
The surge broke out as the crowd pressed towards the front of the stage during Scott's headline set.
On Monday, Houston-based attorney Tony Buzbee announced that his firm was failing a lawsuit on behalf of 35 plaintiffs over the "gross negligence" that led to the tragedy.
Mr Buzbee said that the lawsuit is against Scott and the event's promoters and management, including venue and entertainment company Live Nation, for failing to implement proper security and emergency response measures.
His firm is seeking a temporary restraining order that would compel Scott and all the entities named in the lawsuit to preserve evidence, including texts and other communications regarding the event.
Another suit filed by 23-year-old attendee Kristian Paredes accuses Scott and Drake of inciting "a riot and violence", and claims the venue and entertainment company Live Nation failed to provide adequate security and medical services.
The suit, seeking $1 million in damages, says Mr Paredes "felt an immediate push" at the front of the general admission section, before "the crowd became chaotic and a stampede began".
"Many begged security guards hired by Live Nation Entertainment for help, but were ignored," it adds.
Mr Paredes is described as having suffered "severe bodily injuries".
This is not the first time that Scott has faced legal action over a concert.
In 2018, he pleaded guilty to a public disorder charge after he was accused of encouraging people to rush the stage at a concert in the US state of Arkansas. According to a local newspaper, he also paid nearly $7,000 to two people who said they were injured at the event.