Trains between Bristol Temple Meads and Swindon are being cancelled after a 'fatality' on the line near Bristol.
Great Western Railway (GWR) says some services are being cancelled, delayed or revised as "all lines are blocked" between the two major stations. Services to and from Bristol Parkway are also affected.
Stagecoach buses are conveying people from Swindon to Cheltenham and Chippenham instead, while the British Transport Police manages this ongoing incident, which is expected to last until 2pm, as Gloucestershire Live reports.