Prosecutors said that a skit last year left a San Diego State University student with third-degree burns over 16 percent of his body.

The Phi Kappa Psi members – Caden Cooper, 22, Lucas Cowling, 20, Christopher Serrano, 20, and Lars Larsen, 19 – are accused of purposely setting Larsen ablaze during a large frat party while the organization was on probation, according to the San Diego County District Attorney.