Delays of up to 40 minutes on CrossCountry between Leeds and York due to emergency services dealing with an incident at Micklefield.
There is no current estimate for when a normal service will resume.
Also affecting East Coast, First TransPennine Express and Northern Rail services.
More top news
We have seen a bit of everything this week when it comes to the weather. Here are some of your pictures
A heavily pregnant woman has described the moment she and her husband were told to "get under the table" during the London terror attack.
A Bill known as 'Claudia's Law' to give families more control over the affairs of loved ones who go missing has been passed in the Commons.