sentences:  Another classic case is Nigeria, especially under the rule of General Sani Abacha who was "de facto" president of Nigeria from 1993 until his death in 1998.He is reputed to have stolen some US$3–4 billion.He and his relatives are often mentioned in Nigerian 419 letter scams claiming to offer vast fortunes for "help" in laundering his stolen "fortunes", which in reality turn out not to exist.