A man and a woman have been found dead at a home in Sydney's south. Two innocent people have been seriously injured after a hit-run driver slammed into their car in Melbourne's north.

Commuters in Melbourne's northeast are expecting public transport disruptions until at least next Monday, due to a train derailment that's yet to be fixed.

Australian efforts to recruit Kiwi police officers are ramping up again, but NZ Police say it is nothing new and they are focused on their own recruitment drives.