A police worker has died after being hit by a vehicle on the A90 Dundee to Perth road in the early hours of Saturday morning.
Neil Smith, who was from Dundee, was struck at about 0430 BST just before the Kinfauns flyover.
A spokesman for Tayside Police said the 32-year-old Scene of Crime Officer died at the scene.
It is thought he had been walking to a friend's house after a night out. Police appealed for witnesses.
A stretch of the A90 between Bridge of Earn and Kinfauns was closed for inquiries to take place.
Mr Smith worked with the Scottish Police Services Authority, based in Dundee, and had previously worked as a Scene of Crime Officer with the Metropolitan Police.
Tayside Police's Ch Insp Sandy Bowman said: ''Neil's body was found on the carriageway at 4.30am by passing lorry drivers. Inquiries are at an early stage and we have already traced a number of witnesses who were on the road at the time.
"However, it is vitally important that we speak to every driver who was travelling in the area around the time Neil was discovered. It's possible that those drivers may have important information for us."
Officers also want to speak to anyone who remembers seeing a pedestrian walking on or near the carriageway in the area in the early hours of the morning.
Ch Insp Bowman added: "At this stage it would appear that Neil has walked from Perth city centre but we would be keen to hear from any taxi drivers or anyone else who may have given him a lift to the area.
''Our thoughts are with Neil's family and his colleagues at the Scottish Police Services Authority at this very sad time.''
It is believed Mr Smith was heading to a friend's house in the St Madoes area.