Basatan is a fictional character of the Cthulhu Mythos, first mentioned in "Master of the Crabs" by Clark Ashton Smith. "He" is a sea-god, the Master of the Crabs, and most likely a Great Old One. There is pretty much no information on him except that he posessed a ring with supernatural powers. One could, because of his nature, associate him with Cancer.
In convicting Oliano of murder, the trial court gave credence to the testimony of the widow, Rosita Matias, who positively identified Oliano as the perpetrator.
Moreover, the trial court held that her narration in court was corroborated by Basatan, as well as by PFCs Caramat and Flores.
Prosecution Witness Nancy Basatan averred that she heard a gunshot, followed by the cries of Rosita Matias.