Australian police are hunting a gunman who shot dead two officers and wounded another on Tuesday as they tried to serve a warrant at a rural property in the state of Victoria.In a video statement, Victoria Police Chief Commissioner Mike Bush said 10 officers were met with gunfire at a property in Porepunkah, about 300km (186 miles) northeast of the city of Melbourne, at around 10.30am.Bush said the officers were fired upon, with two killed and one seriously injured and being treated in...