A policeman convicted of double-murder was hanged Friday at the Osaka Detention House, where he had been on death row, sources said.

Kanagawa Prefectural policeman Susumu Kitagawa, 58, was convicted of robbing, raping and murdering a girl in Chiba Prefecture in 1983 and slaying a woman in Kochi Prefecture in 1989 in a similar manner.

Kitagawa was the eighth inmate executed since Prime Minister Junichiro Koizumi took office in April 2001.