Sobhraj, 78, is believed to have killed at least 20 people in Afghanistan, India, Thailand, Turkey, Nepal, Iran and Hong Kong during the 1970s. Last year the BBC and Netflix jointly produced a TV series dramatising his crimes called The Serpent.

Sobhraj, 78, is believed to have killed at least 20 people in Afghanistan, India, Thailand, Turkey, Nepal, Iran and Hong Kong during the 1970s. Last year the BBC and Netflix jointly produced a TV series dramatising his crimes called The Serpent.