Former NZ woman and child killed in Australia

A former NZ woman and her 4-year-old daughter have been murdered in Margaret River, Western Australia.

The bodies of Donna Marie Hone, 44, and Lilleigh Margaret O'Doherty were found in their home about 300km south of Perth on Monday.

They are thought to have died of knife wounds.

Earlier in the day police arrested a male relative walking naked down the main street of the town and talking incoherently.