At 12:19 AM Tuesday Morning Costa Mesa Fire Department and CHP responded to a reported traffic collision on the Southbound 73 Freeway trans road to the Southbound 55 Freeway. First units on scene found a small compact vehicle down a embankment fully involved with fire. Firefighters quickly knocked down the fire. One victim was found and declared deceased at the scene. CHP Santa Ana office will be handling the investigation. The trans road will remain closed till the investigation is finished.