Dr Aubrey Levin, who in South Africa was known as Dr Shock for his use of electricity to "cure" gay military conscripts, was arrested after a patient secretly filmed the psychiatrist allegedly making sexual advances. Levin, who worked at the University of Calgary's medical school, has been suspended from practising and is free on bail of C$50,000 (£32,000) on charges of repeatedly indecently assaulting a 36-year-old man. The police say they are investigating similar claims by nearly 30 other patients. The Alberta justice department is reviewing scores of criminal convictions in which Levin was a prosecution witness. Levin has worked in Canada for 15 years since leaving South Africa, where he was chief psychiatrist in the apartheid-era military and became notorious for using electric shocks to "cure" gay white conscripts. He also held conscientious objectors against their will at a military hospital because they were "disturbed" and subjected them to powerful drug regimens. South Africa's Truth and Reconciliation Commission heard that Levin was guilty of "gross human rights abuses" including chemical castration of gay men. But after arriving in Canada in 1995 he managed to suppress public discussion of his past by threatening lawsuits against news organisations that attempted to explore it.