Defence Minister Gen. Li Shangfu is the second senior Chinese official to disappear this year, following former Foreign Minister Qin Gang, who was removed from office in July with no explanation offered.
Prosecutors are looking at evidence related to the disappearance of toddler William Tyrrell, who vanished from a property linked to his foster family in 2014.
Three boys - Judah El-Hajj aged 9, Azaiah El-Hajj aged 12, Mikael El-Hajj also aged 12, and Malaika El-Hajj, a 16-year-old girl, were last seen in Doonside on Saturday evening.
Before her disappearance, Tina Louise Greer frequently told her daughter she could not leave bikie Lesley "Grumpy" Sharman because he would kill her, a coroner has heard.
The manhunt for Sara Sharif's runaway father and stepmother continues but the dead UK girl's five siblings have been ordered into government custody by a Pakistan court.
Sara's uncle told police about a supposed fatal accident in family's UK home, but he insists he's got no idea where the girl's wanted father is hiding.
Police investigating the suspicious disappearance of Brisbane father Brett Orme say they are following several leads and will expand their search area.
News that four Australians and two Indonesian crew members have been found alive after going missing on Sunday from a boat trip off the coast of Aceh in Indonesia has made headlines around the world.