According to Deutsche Bahn, a technical fault in northern Germany is currently leading to a complete standstill in long-distance traffic.
All ICE, IC and EC trains in northern Germany are affected, the railway said on Saturday morning.
"Unfortunately, there are short-term train and stop cancellations," said the company's website.
The company recommended travelers to get information shortly before planned trips via www.bahn.de/reiseauskunft, via the “DB Navigator” app or by calling 030/2970.
The Bahn website said: "As soon as we have new information, we will keep you updated here."
For the time being, there was no further information about the disruption.
The railway only spoke of a “technical fault on the route”.
Many people may have been caught off guard on the drive into the weekend.