SURREY, B.C. - Homicide investigators in Surrey, B.C., want people with information about the weekend killing of a teenager to turn to police, not social media.

Fifteen-year-old Dario Bartoli died in hospital in the Metro Vancouver city on Saturday following an early morning altercation with a group of people.

Staff Sgt. Jennifer Pound of the Integrated Homicide Investigation Team says early indications support the theory that the killing was an alcohol-fuelled altercation between two groups that turned tragic.

She says the scene was dynamic, events unfolded quickly and police must still determine if and what weapons were involved, as well as the group's size.

Pound says police need time to gather facts-based evidence, not rumour and speculation, and while they have spoken to some witnesses, they are trying to contact "many more."

An autopsy will take place later this week to help investigators determine the cause of death.