A spokesman for Northumbria Police say they believe two teenage girls have gone into the river.
Police, fire and ambulance services are continuing to carry out searches.
More top news
Northumbria Police are holding a series of events to raise awareness around what hate crime is and the support available for victims.
The landslip, which caused part of the Carlisle to Newcastle rail line to close, is expected to re-open fully on Monday, February 8.
If you have been affected by an issue related to mental health help is available 24 hours a day.