A man in his 20s has died after being found on a street suffering from a gun shot wound.
Emergency services were called to Leven Walk in Bedford at 21:40 BST on Saturday. The man was later pronounced dead at the scene.
Det Ch Insp Jerome Kent from Bedfordshire Police said they were "working hard to piece together what happened in this tragic incident".
A police cordon has been put up around the scene on the Brickhill estate.
A man living nearby, who did not want to be named, said: "Rumours were going around that there had been a shooting."
Det Ch Insp Kent added: "We are following several lines of inquiry and are urging anyone who was in the area at the time or has any information to come forward as this may could make a significant difference to our investigation."