Two men were injured in a serious crash that took place on Harrington Sound Road in Smiths early yesterday.
The two-vehicle collision in the Town Hill Road area at about 3.30am left a 22-year-old male bike rider with internal injuries.
Police said a taxi and a motorcyclist with a passenger were travelling in opposite directions when they collided.
The injured rider, from Smiths, and the pillion passenger, a 21-year-old man, were taken to hospital.
A police spokesman said the rider was likely to be flown overseas for treatment, while the passenger sustained a leg injury.
The taxi driver was unhurt.
Also yesterday, a female visitor was taken to hospital with head injuries after a crash on South Road in Southampton.
The rental scooter crashed at about 3pm near the Fairmont Southampton.
Inquiries continue into both incidents. Witnesses are asked to call the main police telephone number on 295-0011.