The leaders of Germany's Christian Democratic Party have published more details of the network of secret bank accounts run by the former Chancellor, Helmut Kohl.

But only one new name has been mentioned..Te electrical engineering company, Siemans, was identified as having donated half a million dollars to the party in the late 1980s and early 1990s.

Siemans is now helping the party with the investigation, but so far it has found no trace of the payment in their records. For months former Chancellor Kohl, who is at the centre of both a criminal and parliamentary investigation, has refused to name the donors who contributed millions of Deutshmarks, which were never recorded, to his party.

From the newsroom of the BBC World Service