Who knew what in French tax scandal?

The French government is under growing pressure to reveal who knew what about the tax-evading activities of budget minister Jerome Cahuzac.

This week he admitted he had hidden hundred of thousands of euros in offshore accounts.

The scandal is threatening to engulf Francois Hollande's government and there are now fresh allegations that Mr Hollande's ex-treasurer, who ran his presidential campaign, is a shareholder in two companies in the Cayman Islands.

The BBC's Christian Fraser reports from Paris.