US unveils $1tn toxic asset plan

The US has announced details of a plan to buy up to $1 trillion (£686bn) worth of toxic assets to help repair banks' balance sheets.

The "Public-Private Investment Programme" will purchase the troubled mortgages and securities that have been at the root of the credit crunch.

The Treasury has committed $75bn to $100bn to the programme and said the private sector would also contribute.

On Wall Street key share indexes soared by up to 7% on the news.