London mayor Sadiq Khan has ordered an investigation into a £50m increase in the cost of converting the Olympic Stadium into the home of West Ham United.

The London Stadium conversion was expected to cost £272m, but the figure has now risen to £323m.

Read more: This is West Ham's "five point plan" to tackle stadium violence

Premier League side West Ham moved into the stadium at the start of this football season.

A spokesperson for the London mayor said: “The mayor is deeply concerned about the finances of the Olympic Stadium, which have clearly been left in a total and utter mess by the previous administration at City Hall.

“Sadiq has ordered a detailed investigation into the full range of financial issues surrounding the stadium.”

Read more: Revealed: West Ham owners free to cash in on Olympic Stadium

Labour London assembly member Andrew Dismore pointed the finger of blame at the former mayor, Boris Johnson: