Milton Keynes bus passenger breaks ankles 10 July 2013 Last updated at 13:04 A woman suffered two broken ankles when a section of loose road sliced through the bottom of a bus in Milton Keynes, a town transport forum said. Milton Keynes bus user group said the vehicle was on Lower Ninth Street going towards Midsummer Boulevard. Spokesman Peter Ballantyne said: "A large slab of concrete lifted up and went straight through the floor." The council said it made urgent repairs and a "full permanent" fix was planned. Bus operator Arriva said it may have happened when the front wheels went over the stone, but it had "never heard of anything like this happening before." Accidents happen Mr Ballantyne said as well as breaking both ankles, he understood the 60-year-old woman's legs had been injured. The woman was injured on 29 June but the bus forum has only just made the incident public. He added he had been asking the council to look at the quality of the road surfaces in that area for 18 months. "It was one of these freak accidents that can occur, but it could have been avoided," he said. Milton Keynes Council said it was "shocked and saddened" at the "very unfortunate incident" and was investigating. Councillor John Bint said: "[I offer] deep sympathies to the lady in question, clearly sometimes accidents happen and can't be prevented. Although there was general concern about the wider area of which this is part, this particular loose piece of stone hadn't been reported because if it had been reported it would have been acted on. He said repairs had been made in "less than 48 hours" and further work would make sure the entire area was "fit" before major investment work in that area in the next couple of years.