The ACT driver, believed to be in his 20s, was the fifth person killed on the nation's roads this Easter despite repeated police warnings.Police were called to the scene 4km from the Uriarra Crossing about 10am yesterday. The driver, in his 20s, was killed when his car left the road during the night, police said.It appears the ACT-registered Nissan Pulsar slipped off the road coming down a hill, hit a culvert and careered into several trees before crashing through a barbed wire fence.

The Pulsar, reduced to a twisted wreck, came to a halt on its roof in a paddock.

The dead man and his vehicle are believed to have remained in the paddock for several hours before a passer-by saw the wreckage in the morning and notified police.Acting Sergeant Scott Howard said only one car was involved, and the driver was the sole occupant of the Pulsar.

''We are looking at excessive speed,'' he said.

Police would not say where the man was from, but are expected to release his identity after it has been confirmed.

ACT Policing's crash investigations team were at the scene in the afternoon reconstructing the accident.

Acting Sergeant Howard said it was too early to tell if alcohol was a factor.The death takes the ACT's 2009 road toll to five and comes at a time when thousands of Canberrans travel to the South Coast.Superintendent Mick Calatzis said the death was ''extremely disappointing'' given the territory was in the grip of Easter weekend double demerits. ''We are obviously concerned about that because it's the Easter road period, and we've been putting some strong messages across to all the public to maintain the safety of our roads.