In particular members of the public should seek to avoid the A27 at Drusillas and the A22 at Lower Dicker while police investigate.
Officers were called to Berwick Post Office, on Station Road, at 3.02pm today (October 17), after a man entered the store and threatened staff.
"Armed police are responding to the incident and the road through the village is currently closed to traffic,” a Sussex Police spokesperson said. “Anyone with information about what happened is asked to contact us quoting serial 791 of 17/10.”
5. Motorists urged to avoid Berwick as police respond to robbery
Motorists urged to avoid Berwick as police respond to robbery Photo: Eddie Mitchell
6. Motorists urged to avoid Berwick as police respond to robbery
Motorists urged to avoid Berwick as police respond to robbery Photo: Dan Jessup
7. Motorists asked to avoid roads near East Sussex village while police respond to a robbery
Motorists asked to avoid roads near East Sussex village while police respond to a robbery Photo: Dan Jessup
8. Motorists asked to avoid roads near East Sussex village while police respond to a robbery
Motorists asked to avoid roads near East Sussex village while police respond to a robbery Photo: Dan Jessup