The first in a number of planned vigils for Ms Maasarwe was held on Friday at La Trobe University, where she was a student.
Police found a hat and a shirt about 100 meters (328 ft) from the crime scene, which Stamper said were believed to be left behind by the person responsible for Maasarwe's death and were "key to solving this crime".
Police have released CCTV vision of Aiia Maasarwe. She had been out at a comedy show, 9News reports, and was taking a tram as she spoke on the phone with her sister.
The family alerted police at around the same time that Ms Maasarwe's body was found at 7am on Wednesday near the tram stop.
Maasarwe, a Palestinian Arab of Israeli citizenship, had been in Melbourne for six months on a student exchange program and was working towards a business degree, with intentions to work with her father in China.
Victoria state health minister Jenny Mikakos said there would be an increased police presence in Bundoora, which is frequented by students, to reassure the community during the investigation.
Homicide Squad detectives are appealing for information following the discovery near the Polaris shopping centre on Wednesday morning.
Maasarwe's uncle, Rame, told CNN affiliate Nine News Australia her death was the "last thing" he expected in a country such as Australia.
"In anger that this bright young woman's life was taken from her".
Her sister "heard the sound of the phone falling to the ground and heard some voices", Police said.
A service will be held on the steps of the Victorian parliament on Friday night for Aiia Maasarwe, 21, with people to wear black and remain silent in protest against male harm towards women. "The likelihood of you being a victim is very remote". "We have a grieving family who had to fly halfway across the world under the most horrific circumstances and we want to be able to give them some answers", Inspector Stamper said.
According to the BBC, he has traveled to Australia to identify the body. "We express our heartfelt condolences to Aiia's family and stand ready to support themduring this time as our consul works to return her body home to Israel for burial", it said in a statement.
"I don't want to go out alone anytime soon, you don't feel safe here anymore and it's just tragic", she said.
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