Two death-row inmates were hanged Thursday morning, each for killing two people, amid a series of crimes ranging from extortion to robbery.

Hanged were Mitsuo Fujishima, 55, and Ryoji Kagayama, 63.

Fujishima drowned his ex-wife's aunt in March 1986 while skipping probation for an assault conviction to prevent her from reporting him to the police. Shortly after, he also drowned his ex-wife's boyfriend during an attempt to extort him for getaway money, after luring him to his death.