At the beginning of Black Panther, King T'Chaka kills
his brother, T'Challa's uncle.
It later transpires that the body was left in Oakland, where
his son Erik found it.
This was undoubtedly a major motive for the film's antagonist. So why did T'Chaka leave the body there in the first place instead of returning it to Wakanda for burial, or disposing of it in some other fashion?