Bus fire causing delays on A45 between Rushden and Wellingborough
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Northamptonshire Police say nobody is believed to have been on board the bus.
A force spokesman said: “There are currently tailbacks on the westbound carriageway of the A45 between Rushden and Wellingborough due to a bus fire.
"Emergency services are on scene, and no-one is believed to have been on board.
“Please find an alternative route if possible.”