NEIGHBOURS of private schoolgirl-turned-radical Muslim Amira Karroum, killed in Syria last week, claim they were forced to call police after she verbally abused them.

They said she also scrawled Arabic writing on her unit door referencing Osama bin Laden.

Karroum, 22, lived in an apartment in Liverpool for about six months until she met her husband Yusuf Ali, who was also killed in the war-ravaged city of Aleppo, and moved out late last year.

Residents in the unit complex said they repeatedly complained to the property manager because she left rubbish and furniture in common areas. At one stage the agent had to be contacted when Karroum's unit door was painted bright pink and vandalised with Islamic graffiti.

"It was the worst time I can remember ... every week there were problems and we would have to call the agent," the neighbour said.

"She was totally rude to other residents and abusive."

media_camera Picture believed to be Amira Karroum who was killed in fighting with her husband Yusaf Ali in Syria.

The former Queensland Anglican schoolgirl lived at the unit when she moved from her Gold Coast home last year.

The neighbour claimed Karroum once threatened him, prompting him to call police.

"One time it was so bad I called the police to report it," the neighbour said.

"She was saying things like, 'you don't know who I know', and I was pretty concerned."

LJ Hooker Liverpool property manager David Yelda confirmed Karroum was a tenant in the Atkinson St building.

media_camera Amira Karroum's mother Honor Deane.

"I know there were complaints while she was there, but I'm not aware of the police being called," he said.

He said the front door to the unit was repainted once Karroum left, but he said it wasn't appropriate to comment further, considering Karroum had been killed.

The Liverpool unit is only a few streets away from a location she regularly "checked in" at on Facebook, dubbing it "Bin Laden's Cave".

The Department of Foreign Affairs would not comment on whether Karroum and Ali's bodies had been flown back to Australia, saying the department was "assisting the family.A family friend arrives with flowers at the home of Honor Deane. Picture: Richard Gosling