A 68-year-old Japanese man was killed in Katmandu, allegedly by the husband of a Nepalese woman who suspected that he had an affair with his wife, police said Tuesday.

Police said Hidejo Sugiyama, of Kawasaki, Kanagawa, was found dead and a 45-year-old Nepalese woman, Mangla Thapa, lying injured, inside a rented house on Monday evening in Katmandu's Swayambhu district.

Sugiyama, described by Japanese Embassy officials as a frequent traveler to Nepal, bled to death from wounds to his forehead and throat inflicted by a sharp weapon.

Mangla's husband, Lekh Bahadur Thapa, a former police officer, reportedly locked himself in the room where Sugiyama was slain before turning himself in to police and confessing to the killing.

Thapa told police that he was trying to kill his wife but the blow he aimed at the woman missed and instead hit Sugiyama. Thapa reportedly suspected that his wife was having an affair with Sugiyama.