Citi opened a probe into the conduct of its head of wealth Andy SiegPhoto: Noam Galai/Getty Images

Citigroup did not interview a number of senior women at the bank who raised concerns about Andy Sieg as part of an internal investigation into the wealth boss’s conduct, according to reports.

Paul Weiss, the Wall Street firm’s long-standing legal adviser, was asked to carry out a probe into Sieg’s conduct after he was accused of bullying and intimidating behaviour by a number of former and current staff.