There is disruption on First Capital Connect between Brighton and Bedford due to signalling problem at Preston Park. Tickets being accepted on East Midlands Trains, Southern, South West Trains, London Overground, London Tramlink and London Underground services.
Buses are replacing trains Haywards Heath to Brighton. Southern are running a reduced service on this route so passengers can use those trains as well. Two services run per hour between Bedford and Haywards Heath and these may be delayed by up to an hour.
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The attack is said to have happened in Basingstoke on Monday.
Wednesday morning's weather for the west of the region
Wednesday morning's weather for the east of the region