A man charged in the shooting death of his roommate in March is one of the many people indicted by the Warren County grand jury on Friday. Greggory Allen Koller, 61, was indicted for criminal homicide and tampering with or fabricating evidence. Koller was charged in March after he reportedly made a frantic 911 call claiming to have shot and killed his roommate, Steven Pohl, 57, in self-defense after a drunken argument.