The shooting victims were taken by ambulance to a hospital, where at least one of them was being treated for what police described as serious, life threatening wounds.
Officers did not locate a suspect or suspects and no arrests had been made, police said.
Parts of Southwest Third Avenue were closed during the investigation, police said.
The Portland shooting — which police said occurred just after 2 a.m. — is the latest in a spate of gun violence that has gripped US cities this summer.
CNN defines a mass shooting as four or more people shot, not including the shooter.
With states lifting Covid-19 restrictions and more people out in warmer weather, US cities have been experiencing a surge in shootings and homicide numbers.
The child was pronounced dead at a local hospital, police said. Three men and two women sustained non-life-threatening injuries, said Metropolitan Police Department Executive Assistant Chief Ashan Benedict.
Source: CNN – US News