Further allegations against former CERA boss Roger Sutton have come to light.

Mr Sutton is on gardening leave, after an investigation for sexual harassment found he had committed serious misconduct.

It's now alleged the woman who made a complaint against Mr Sutton was not alone, The New Zealand Herald reports.

Sources say she was prompted to come forward after hearing of other occasions where Mr Sutton's conduct was questioned, and she believed there was a pattern of behaviour.

A second woman who had worked closely with Mr Sutton gave evidence at the inquiry into his actions, and corroborated the sexual harassment allegations.