Mr Davis, 60, who appeared at the US district court in Houston as part of a plea agreement with the authorities, was subdued as he pleaded ??guilty, your honour? to three felony counts, including fraud and obstruction of justice, for which he could face a maximum prison term of 30 years. He also agreed to forfeit $1bn.
Prosecutors in June accused Sir Allen, Mr Davis and Laura Pendergest-Holt, Stanford??s chief investment officer, of pledging high rates of return on $7bn of certificates of deposit issued by Stanford International Bank, and then allegedly misappropriating most of the funds.