Key facts
- Three people have been arrested in connection with a murder investigation.
- A man went overboard from a sailing boat in Arne Bay, Poole Harbour, Dorset.
- The man entered the water between 8pm and 9pm last Friday.
- The man has not been found.
A man has gone missing after entering the water from a sailing boat in Poole Harbour, Dorset. The incident has prompted a murder investigation, with three arrests made. The search for the missing man is ongoing.