London mayor Sadiq Khan today backed calls for a new probe into the controversial £175m 'Garden Bridge' over the Thames.
Labour MP Kate Hoey has asked an official watchdog, the National Audit Office, to investigate the use of public money on the project.
The mayor claimed last week the bridge would cost Londoners more to cancel than to build. He said £37.7m of public money had already been spent.
Mr Khan said some of the money was used to pay for design work on the planned river crossing.
Transport for London and the Treasury are contributing a total of £60m in loans and grants towards the cost of the bridge.
The new mayor previously described the bridge as a Boris Johnson 'vantity project'.