Footage of a person falling into the harbour at Ramsey, Isle of Man, is thought to almost certainly be missing teenager Joshua Caley, local police have said.
Captured just after 1am on New Year's Day, "the footage shows a male believed to be Joshua fall into the water near to the Mezeron Shipping company on the East Quay" police said.
They added that the person clearly fails to get back to safety meaning that "this is undoubtedly a search and recovery operation now given the timescale of the incident and a co-ordinated search will continue today of the surrounding harbour and water areas in conjunction with the Isle of Man Coastguard".
Caley was reported missing by his parents on Friday morning after he failed to return from a New Year's Eve night out.
Police thanked the 40-strong search and rescue team who had been working in "horrendous conditions" to try and find Caley, as well as his friends who had provided detailed accounts of their movements the previous evening.
They added: "Our thoughts are with Mr and Mrs Caley at this sad time and all efforts will now focus on the search today."