(CNN) — Eight people were shot in downtown Portland, Oregon, early Saturday, according to the Portland Police Bureau.

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.

There have been 361 mass shootings so far this year, according to the Gun Violence Archive (GVA).

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.

In the nation’s capital on Friday night, a 6-year-old girl was killed and five adults injured in a shooting in the southeast part of the district, authorities said.

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.

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