Investigation ordered into rising costs of Olympic Stadium (The Associated Press)

The mayor of London has ordered an investigation into the rising costs of converting the Olympic Stadium into the home venue for Premier League club West Ham. The centerpiece of the 2012 London Games has been transformed into a 60,000-seat multi-purpose venue at a cost of $400 million, about $60 million more than initially estimated. London Mayor Sadiq Khan's office says ''a detailed investigation into the full range of financial issues surrounding the stadium'' has been ordered.