Rescue divers are currently searching in the River Eden at Lazonby after a report of a person in the water.
Emergency teams from Cumbria Fire and Rescue Service, police, ambulance, mountain rescue and the air ambulance helicopter are all involved in the ongoing operation.
They were first alerted at about 3.20pm.
Police have confirmed they're at the incident.
A spokesman for the Great North Air Ambulance Service said:" We attended an incident at Lazonby at 3.20 the team were stood down and were not needed to treat a patient."
More details to follow.
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