Edmund Echukwu died in pool at swingers ' party in London on Friday . 35-year-old believed to be a Nigerian father-of-three from north Hertfordshire . Owner of mansion says he may have suffered heart attack in water . A post-mortem examination is due to be held today ahead of an inquest .
Edmund Echukwu died in pool at swingers ' party in Hertfordshire on Friday . 35-year-old believed to be a Nigerian father-of-three from north London . Owner of mansion says he may have suffered heart attack in water . A post-mortem examination is due to be held today ahead of an inquest .