St. Paul police are investigating a homicide on Sunday, the second in the Frogtown neighborhood within 24 hours. Police said they do not believe the cases are connected.

Officers working off duty at Johnny Baby’s bar at University Avenue and Chatsworth Street reported hearing gunshots in the area about 2 a.m., said Steve Linders, a St. Paul police spokesman. The shooting happened around bar closing time, and Linders said it sounded like a chaotic scene.

A short time later, someone dropped off a man at Regions Hospital. He had been shot and received medical attention but died at the hospital.

Police set up crime scene tape in the bar’s parking lot area and were collecting evidence. Homicide investigators brought several people to headquarters for interviews.

No arrests have been made in the weekend homicides and police have not released the victims’ names.

In posts on Facebook, friends and family identified Saturday’s victim as Dawahn Littles. A GoFundMe account has been set up to help pay for his funeral expenses. Friends identified Sunday’s victim as Brandon Roberts.

Valerie Littles-Butler identified herself as Little’s aunt and set up the gofundme account, writing on it: “Dawahn was a young man with a big heart. His compassionate heart stopped beating when he was shot while trying to break up a fight. He was (a) young entrepreneur of a business that served the community in many capacities. He was a role model for all generations especially his four kids.”

Police ask anyone with information about either homicide to call them at 651-266-5650.Sunday’s case is St. Paul’s 19th homicide of the year. Through mid-October last year, there had been 16 homicides.

The fatal shooting on Saturday occurred about 5 a.m. in the area of Lafond Avenue and Dale Street. Officers were initially called about a fight and found a shooting victim in the street.

Paramedics took the man to Regions Hospital, where he was pronounced dead.

Police said they’ve been working to address gun violence in St. Paul, but they need the public’s help to report who is carrying guns illegally or shooting, Linders said.

Reports of shots-fired with no one injured in St. Paul were up 37 percent through mid-October, compared with the same period last year. More than 130 people have been shot, and officers have recovered more than 400 guns.

“Gun violence is an insidious problem,” Linders said. “It tears neighborhoods apart. It makes it so families sometimes have to live in fear. It also puts our officers in incredibly dangerous positions when there’s more guns on the street and people are willing to shoot those guns indiscriminately.”

Kristi Belcamino contributed to this report.