( CNN ) The man who beat serial killer Jeffrey Dahmer to death inside a Wisconsin prison says he did it because of Dahmer 's creepy sense of humor -- which included turning prison food into fake limbs covered with ketchup to resemble blood , the New York Post reports . Christopher Scarver , who was sentenced to two life terms in prison for killing Dahmer and another man at Columbia Correctional Institution in 1994 , said the confessed cannibal would leave the fake limbs around the prison where others would find them . `` He crossed the line with some people -- prisoners , prison staff , '' the newspaper quoted Scarver as saying . `` Some people who are in prison are repentant -- but he was not one of them . '' In a separate story , the Post quotes Dahmer 's former prison minister as saying the convict would make jokes about this cannibalistic past . `` If he saw a guard that was nervous and standing near enough to hear him , he would say , ' I bite , ' '' the newspaper quoted the pastor , Roy Ratcliff , as saying . `` Usually the guard would jump away and that would make Jeff laugh . '' `` He sort of played with his persona to exaggerate it and make people more fearful , '' Ratcliff said . `` This was just his way — a morbid humor to deal with his hopeless situation . '' Scarver was convicted of killing Dahmer on November 28 , 1994 . He told the Post that he killed Dahmer and another inmate , Jesse Anderson , after an altercation while they were together unsupervised on a work detail . Scarver said he kept a newspaper article detailing Dahmer 's crimes , which included killing 17 men and boys between 1978 and 1991 , having sex with corpses , keeping some of the body parts and eating others . Just before he killed Dahmer , Scarver said , he confronted him with the clipping . `` I asked him if he did those things 'cause I was fiercely disgusted . He was shocked . Yes , he was , '' the Post quoted Scarver as saying . Scarver said he hit Dahmer twice in the head with a metal bar from a weight room . He then killed Anderson , who was working in a different room .
Scarver killer tells New York Post he did it because of the convict 's creepy practical jokes . Dahmer 's former minister tells the paper he 'd say to guard , `` I bite ''