Nine people were injured in a mass shooting that police described as "targeted and isolated" in San Francisco's Mission District.

According to the San Francisco Chronicle, the shooting took place just after 9 pm during a party held by a clothing company close to the corner of Treat Avenue and 24th Street.

All of the victims were initially listed by the San Francisco Police Department as "expected to survive their injuries." One of the casualties, according to a statement from the Zuckerberg San Francisco General Hospital, was still in serious condition as of Saturday afternoon.

Four people were in fair condition, one was reportedly in severe condition, three had already been released from the hospital.

The casualties were eight males and one woman, ranging in age from 20 to 34, the hospital reported.

Police Chief William Scott described the mass shooting as “unacceptable".

“People should feel safe to go out in San Francisco without fear of being victims of gun violence,” Scott said.

“Our investigators are working diligently on this case, and we will have a visible police presence moving forward in the community where this occurred,” he added.

According to a post on the apparel store's Instagram page, Dying Breed, which is close to the crossroads where the shooting occurred, was planning a block party to mark its sixth anniversary on Friday night.

On the same day, two people were killed and another was injured in a shooting that involved Kansas City police, the Missouri State Highway Patrol confirmed.

The latest shooting resulted in the 83rd and 84th killings in Kansas City this year. The city saw 172 homicides last year, the second-highest number on record.

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