Australia news live: three dead and man arrested in Sydney; Liberals claim seat of Nepean in key Victorian byelection

Man, 32, arrested in the early hours of Sunday morning after incident in Rosemeadow. Follow updates live

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Northern Territory police commissioner Martin Dole said Jefferson Lewis, the alleged killer of Kumanjayi Little Baby, has been formally charged with murder and two counts of sexual assault.

Lewis would be appearing in Darwin local court this week.

This is horrific events and a horrific set of circumstances, and our thoughts remain strongly with the family, also with the community, as everyone processes the impact of these horrific events.