Some kidnap victims have required treatment for snake bites following their release
Recently released victims of kidnapping in Nigeria say snakes were used to terrorise them into raising ransoms.
The West African country has seen a sharp rise in kidnappings, with ever greater sums being extorted.
One abductee told the government-owned News Agency of Nigeria some victims were forcibly taken to areas known to be snake-infested.
"That's when a victim will ask friends and family to sell everything to raise the ransom – house, cars, goods, just everything," the agency quoted an abductee as saying.
Local doctors have confirmed that some kidnap victims have required treatment for snake bites following their release.