PORTLAND, Ore. (KOIN) – A teenager was found dead when police responded to a medical call at about 4:40 a.m. Saturday in the 12800 block of SE Holgate Boulevard.

The Portland Police Bureau said a security guard found the teen, identified as 18-year-old Dohnavinh Saelee, down in the Powellhurst-Gilbert neighborhood. Medical personnel pronounced him dead as soon as they arrived.

Responding officers discovered evidence of a shooting, prompting homicide detectives to get involved, PPB said.

An autopsy was conducted and Saelee’s death was ruled a homicide by gunshot.

PPB is asking anyone with additional information to contact Detective Joseph Corona or Detective Michael Jones at 503.823.0508, Joseph.Corona@portlandoregon.gov or Michael.Jones@portlandoregon.gov.