Arturo Romos Marquez, 24, was murdered on February 26, 1977, in Banning, California. Marquez was shot, sodomized postmortem, and dismembered — actions described as part of Kearney’s pattern of necrophilia and dismemberment carried out after death.

Kearney’s activity between 1962 and 1977 included the killings of at least 21 young men and boys, with some estimates suggesting as many as 43 victims. He reportedly targeted young male hitchhikers or men from gay bars, killed them, and disposed of their bodies in trash bags.

What details about Arturo Marquez’s life, last movements, or those who knew him might help shed more light on his disappearance and killing?