A man could face murder charges after another man was killed on a suburban street in the Adelaide Hills region.The pair, who police say were known to each other, were involved in an altercation last night on Paterson Lane in Mount Barker.Police were called to the scene, but found one of the men had been taken to hospital in a car, and the other person had fled.LIVE UPDATES: Trump says the 'big wave' is yet to come in war with