The A31 Winchester Road in both directions closed at Four Marks in Hampshire. There is queueing traffic due to multi-vehicle accident between Telegraph Lane and A32 / Northfield Lane / Winchester Road (Chawton Roundabout).
Affecting traffic between Winchester and Alton, it is anticipated that the road will remain closed throughout this evening's peak period. Many other roads in the area are congested as a result.
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The families of all four of the victims, all of whom were men, have been informed, police said.
Saturday evening's weather for the east
Saturday evening's weather for the west