Melbourne updates warning system amid New Year preparations

Security procedures are being intensified across the country's two biggest states ahead of New Year's Eve celebrations. It comes after several recent incidents and alleged thwarted attempts at attacks on busy areas. Authorities have warned the public to expect an extra police presence and increased safety measures.

NSW Police show off to the media the Public Order and Riot Squad equipped with M4 Carbine guns at Circular Quay in Sydney, Monday , December 18, 2017 Source: AAP