A man's body has been retrieved from the water near Havelet.
Guernsey Police officers were alerted earlier today.
Formal identification is awaited, but the family of Matthew Bourgaize have been informed.
The 29-year-old went missing on 11 January and was last seen leaving the Oberlands Centre on the grounds of the Princess Elizabeth Hospital.
A further announcement is due 'in the coming days'.
More to follow...

Tickets on sale for inter-islands women’s football tournament
Person airlifted to hospital after fall on yacht near Alderney
Guernsey Planning drop in promotes extended family living
Guernsey Hospital returns to normal operating capacity days after critical incident
Premier and WSL Super League trophies on display in Guernsey
Electricity prices in Guernsey are to go up again in July
Guernsey's animal charity condemns exercising dogs in the heat
Guernsey man to attempt 1000 mile challenge