Two men wearing wetsuits have been arrested on suspicion of drug smuggling offences after being pulled out of a river in Essex.
Police said the pair were reported to be in the River Stour, off Parkeston Quay, Harwich, near to the ferry Stena Britannica at about 0600 GMT.
The two were pulled out on the Felixstowe side of the quay and taken to hospital for checks.
Three other men found nearby in a vehicle were later arrested.
All five have been arrested on suspicion of drug offences.