A search is under way after a teenage boy jumped from a ferry into a river.
Jordan Cobb, 16, from Plymouth, was spotted jumping from the Torpoint ferry into the River Tamar on Monday night, Devon and Cornwall Police said.
Brixham Coastguard received a Mayday distress call from the Torpoint ferry at 9.15pm reporting a man overboard near the ferry's slipway in Torpoint, Cornwall, the Maritime and Coastguard Agency said
Police, the coastguard and the RNLI conducted an extensive search for the teenager after he failed to reappear.
Officers are now appealing for information about the incident.
Chief Inspector Ian Drummond Smith said: "We are treating Jordan as a high risk missing person and we are working with the coastguard to try and locate him.
"The river was extensively searched by air and sea for several hours, but there remains a possibility that he managed to swim ashore, and I would ask anyone with information to call the police on 101."
The search for the missing teenager resumed on Tuesday.