Four members of a San Diego State fraternity allegedly gave a pledge third-degree burns as part of a hazing ritual that left the young man in the hospital for weeks.

Four members of San Diego State University (SDSU)’s Phi Kappa Psi fraternity have pleaded not guilty to criminal charges relating to a stunt that allegedly involved deliberately setting one of its new members, known as a pledge, on fire, causing him to suffer third-degree burns.