"Mark Thatcher provided financing for a coup d'etat in Equatorial Guinea and then he organised all the transport for the coup d'etat, " Mr Obono told the Associated Press.

BBC: E Guinea seeks Thatcher's arrest

Former British Prime Minister Margaret Thatcher's son Mark was a notable entry in 1982, when he went missing for six days along with his co-driver and mechanic.

CNN: Triple amputee takes on world's most dangerous race

Deputy prime minister Nick Clegg has described Baroness Thatcher as a "towering" figure who left an "indelible" mark on her country and the world.

BBC: Thatcher a 'towering' figure - Nick Clegg