A man has died in a third fatal stabbing in Melbourne in two weeks while four young people who were arrested have been released pending inquiries.
Emergency services were called to Atherton Road, Oakleigh, shortly before 8pm on Monday on reports of a fight between a group of people.
Thomas Tran, 20, from Springvale died at the scene.
Family members and friends visited the site on Tuesday and Mr Tran's girlfriend Trish Nguyen tearfully called for the violence to stop.
"We've lost a loved one, it's really not worth it," she told media.
"You shouldn't do that to people's families.
"I hope you get what you f***ing deserve for doing that to him."
She paid tribute to her boyfriend, saying he put others before himself.
"He really cared about people and he really loved everyone," she said.
"He put everyone before him."
Police arrested a 15-year-old Dandenong teenager, a 20-year-old Dandenong South man and two 19-year-olds from Lynbrook and Lyndhurst, who have since been released pending further inquiries.
The exact circumstances surrounding the incident are being investigated.
Police are appealing for anyone who may have been in the area of Chester Street, Eaton Mall and Atherton Road between 7.30pm and 8pm on Monday who may have camera footage to come forward.
The incident follows two other stabbings in the past two weeks.
Solomone Taufeulungaki, 15, was stabbed and killed in Deer Park on June 16 and 21-year-old man, Machar Kot, died in the CBD on June 22.