Lake Macquarie Police have commenced an investigation into a robbery in Charlestown overnight.
It's alleged a 31-year-old man was walking to his parked vehicle on Carl Close at about 10:30pm, when he was approached by two unknown males.
There was an altercation, and the pair allegedly stole cash and a car key before fleeing the scene.
The victim sustained a wound to his knee and was taken to John Hunter Hospital with non-life threatening injuries.
Anyone who may have information is urged to contact Crime Stoppers.