When officers arrived they found Mr Evans lying in the road suffering from serious injuries. He was taken to hospital by South Central Ambulance Service but died a short time later in hospital.
His next of kin have been informed. A post mortem has taken place to establish the cause of death.
Detective Inspector Simon Baker said: “Officers will remain in the area overnight and into tomorrow as we continue our investigations.
“If anyone has any concerns or has information that may assist with this investigation then we would ask them to call us via 101, quoting 44160133129.”