Wan Polo was seen outside of Zanzibar dancing with Karina Holmer while intoxicated, two nights later he is rummaging through the garbage to try and find something of worth. While rummaging he opened a garbage bag and found the top half of Karina Holmer's Body.
He is investigated because he found the body and he was one of the last people seen with her. They also questioned him to see what else he saw that night.