Police discovered victims inside and outside the bar, Linders said.
Police officers “worked with good Samaritans to render aid and make sure it was safe for Saint Paul Fire medics to make their way to the area,” according to the city.
Fourteen people were taken to the hospital, and the woman in her 20s died at the scene.
The three men arrested are in the hospital being treated for injuries they received during the incident, St. Paul Police said in a tweet announcing the arrests.
Once the men are discharged, they’ll be taken to jail and “await a charging decision.”
St. Paul police did not release any additional information.
“This is nothing short of a tragedy. We had people in the City of St. Paul, out on a Saturday night having a good time. And we had other people who decided to pull guns, with reckless disregard for human life, and pull the trigger over and over and over again. And it ended in tragedy,” Linders said.