A boy and his sister - both aged under 10 - were robbed at knifepoint just yards from their Norwich home as they went grocery shopping for their mother.

A boy and his sister - both aged under 10 - were robbed at knifepoint just yards from their Norwich home as they went grocery shopping for their mother.

The children, aged eight and nine, were walking towards the Spar shop in Earlham Grove on Saturday afternoon to buy a pizza and some ice-cream when they were forced to hand over a £5 note by a man wielding a knife.

Police said that the robber had leapt from the back of a red car - believed to be a BMW - parked outside the nearby Grove pub after seeing the girl, eight, hand the banknote to her nine-year-old brother. Two other men were sitting in the back of the car, both wearing balaclavas.

Police have examined security camera footage of the area and were due to interview the children today.

The robbery happened at about 1.30pm and the robber was described as white and wearing a blue-hooded top, a blue T-shirt and blue jeans. The car was last seen heading along Earlham Green Lane.

Anyone with information can contact Det Con Kim Taylor at Bethel Street CID on 01953 424242.