Authorities in both Minneapolis and St. Paul are investigating three Friday night shootings, one of them fatal. 

The first happened at about 6:30 p.m. on the 1600 block of Washington Ave N. in Minneapolis. While officers responded to a shots-fired call in the area, two adults showed up at Hennepin County Medical Center with gunshot wounds.

Both suffered non-fatal injuries, a press release from the Minneapolis Police Department says.

A few hours later, at about 10:30 p.m., officers were dispatched to the 3400 Block of Emerson Ave N. to investigate a ShotSpotter activation as well as "numerous 911 calls" reporting gunshots in the area.

They were soon flagged down and directed to a juvenile male "sitting off to the side of a residence" with gunshot wounds; meanwhile, two other juveniles who had also been shot showed up at North Memorial hospital "via private transport."

All three victims were juveniles. According to the Star Tribune, they and a fourth victim had been shot at a house party.

About an hour later, in St. Paul, a person was shot to death on the 1600 block of Jackson Street, a couple miles north of downtown. 

When the male victim was found outside a multifamily residence, officers attempted lifesaving measures, but he died before he could be transported to a hospital, a news release says. 

No arrests have been made, and an investigation is now underway. Anyone with information is asked to call 651-266-5650.

This is the city's 12th homicide of the year.