Mystery of decomposing bodies of two sisters found in flat with no injuries deepens as it emerges they fled Saudi Arabia

The sisters reportedly left their families in 2017, aged 18 and 19 and fled to Australia.

They were helped by a refugee service that helps those seeking asylum.

Sources told the outlet they had little contact with their family back home which makes it hard for police to locate their relatives so they can identify the bodies.

Additionally, it has emerged that the older sister had taken out an AVO against a 28-year-old man in January 2019 which was later withdrawn and dismissed.

Before the bodies were discovered, there had been two prior welfare checks.

During one check, the women were described as "timid" and refused to let anyone enter the flat.

A source said: "They were standoffish and didn't really want to talk.

"Something felt off, but they said they were ok. What more could anyone do?"

The first welfare check was reportedly conducted in March, with officers leaving after the women insisted they were fine.

The source said the pair spoke English "relatively well" - but they were withdrawn and kept to themselves.

Two months after the welfare checks, their rent stopped being paid and their mail started piling up at the door.

Residents previously described the building as typically quiet, with the grisly discovery rocking the local community.

Neighbour Alan Ho told the Daily Telegraph: "It's usually a pretty tame area so it's pretty concerning to hear about something like this."

Another neighbour said: "It's sort of scary to know this is what's happening in your own neighbourhood, we hear sirens go up and down all the time... and then to be so close to home, it's quite scary."

Neither victim has yet to be formally identified.

Anyone who has information is urged to contact Burwood Police Station or Crime Stoppers.