A fire on board a train is causing widespread disruption to services tonight.
There have been reports of passengers being stranded at Manchester Piccadilly railway station as a result.
Northern reported the blaze broke out on a line in Brinnington, between Ashburys railway station in Openshaw and Romiley, Stockport.
As a result, trains running through the stations are expected to be delayed or diverted.
Passengers are being urged to listen for announcements on platforms and customer information screens.
Northern said trains between Ashburys and Romiley were unable to run in either direction.
Replacement buses are being organised.
Disruption is expected to hit services on lines until at least 11pm on Tuesday night, said Northern.
The operator said in a statement: "Due to a fire on a train between Ashburys and Romiley all lines are blocked.
"Train services running through these stations may be delayed or diverted.
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"Replacement road transport has been requested to run between Manchester Piccadilly and Romiley in both directions.
"Operators and times to be confirmed.
"For passengers on station platforms, please listen for announcements or consult customer information screens for up to date train running information."
Northern said the first service affected was the 7.19pm train from Piccadilly to New Mills Central.
The buses were due to start running from 9pm.
Northern added: "Services from Manchester Piccadilly to New Mills Central/Sheffield will run via a diversion and will not call at Ashburys, Ryder Brow, Reddish North, Brinnington and Bredbury in both directions until further notice."
Greater Manchester Fire and Rescue Service has been contacted for comment.
