Armed police have been patrolling the area of Luton, where a teenage boy was shot at the weekend.
The 16-year-old was gunned down early on Saturday morning. He remains in a serious condition.
A one-thousand-pound reward is being offered for information.
More top news
The sun has kept shining across the Anglia region during April which has led to warm days but clear skies overnight have meant chilly nights
The Cambridgeshire-based charity The Mountain Trust has launched an appeal to help people in Nepal.
A Cambridgeshire charity is waiting anxiously for news of a climbing team trapped on Mount Everest after the earthquake