UPDATE: Apparently the stabbing took place during David Guetta's performance.

A violent stabbing was apparently swept under the rug in Las Vegas over Labor Day weekend.

TMZ reported that 4 people were seriously stabbed at a Skrillex & Diplo show at XS Nightclub inside the Encore hotel.

The Las Vegas law enforcement reported that a fight involving 20 people broke out in the middle of the show, leaving 4 people with stab wounds. It is being said that the fight has all of the markings of a gang fight as one victim admitted to gang ties and didn't want to proceed with any formal charges.

Law enforcement have said they have arrested someone on 3 counts of attempted murder.