Cassius remembered in emotional WA vigil

Cassius Turvey's mother Mechelle Turvey has told a vigil that her son was the "greatest". (Richard Wainwright/AAP PHOTOS) (AAP)

Cassius Turvey has been remembered as a devoted and charismatic friend and family member as his community in Perth lit 15 fire pits to represent a life cut tragically short.

Hundreds of people gathered at a candlelight vigil on Monday night to mourn the teenager, whose alleged murder has sparked an outpouring of grief and anger.