In the most terrifying video to hit the web in a long time, an amateur acrobat was filmed falling through a safety net during a stunt at a Moscow circus, which resulted in Karo Christopher Kazungu breaking his back.

Kazungu, 22, was rushed to the hospital with severe injuries following the stunt Wednesday night, which included a fractured vertebra, CBS News reported.

The video, which originally aired on a Russian television show, shows Kazungu doing a downward dive from 85 feet in the air. He was supposed to fall on the safety net, but instead, fell through it and landed smack into the floor. First responders are seen in the video rushing to help Kazungu almost immediately after he hit the ground.

Kazungu was halfway through his routine when the accident happened and was supposed to bounce back up from the net.

Despite the accident, the Great Moscow State Circus said the safety net had been previously tested and met inspection qualifications prior to the routine. CBS reported the director general, Edgard Zapashny, had told Russian television news the particular net involved was “rigorously tested.”

Employees of the Moscow State Circus believe someone tampered with the net, but Zapashny said there were no immediate signs of sabotage during the first round of inspection.

The Circus wrote on its website Thursday that Kazungu was conscious when he was rushed to the hospital, where he was put in intensive care, The Associated Press reported. The RIA Novosti news agency said the acrobat was diagnosed with a fractured vertebra in his spine.