Sex partner died when left with gas mask around face, manslaughter trial told

A man died after his sexual partner left him on a bedroom floor with a gas mask around his face and ropes around his hands, feet and neck, a court heard.
Dohoon Kim, 36, was found dead in the early hours after meeting friend Kevin Adams, 52, at his home in Swindon, Wiltshire, for sex in June 2015.