Tory Lanez was caught on video being stabbed multiple times inside a California prison, with newly surfaced footage from the attack showing the rapper collapsing near a stairwell as he struggled to defend himself from a brutal ambush.

The video captures the chaos inside California Correctional Institution in Tehachapi, where Lanez was assaulted by Santino Casio, a convicted murderer. The clip shows Lanez falling to the ground as Casio repeatedly lunges at him with a weapon. Lanez suffered 14 stab wounds in total, seven to his back, four to his torso, two to the back of his head and one to the left side of his face. He has since stabilized, though the motive behind the attack remains unclear. Casio has been moved to a segregated unit while the investigation continues.