Three people were wounded in a two-hour span early Tuesday, and Denver police said a white SUV was suspected in each attack.

The shootings started outside a homeless shelter just after 3 a.m. and ended two hours later and 4 miles away in Park Hill. None of the gunshot wounds is life-threatening, police said.

“We have reports of a white SUV being involved in each one,” said Doug Schepman, police spokesman. “We’re concerned we have three early-morning shootings that may be connected.”

However, Schepman said, police do not believe the shootings were random. Police have not disclosed a possible motive.

The first shooting happened at 3:03 a.m. outside the St. Francis Center, a homeless shelter at Curtis Street and Park Avenue, Schepman said. A man was shot.

The second happened six blocks away at Glenarm Place and 24th Street at 4:59 a.m., he said. A second man was shot.

The third shooting happened at 5:07 a.m. at Forest Street near East 36th Avenue in Park Hill, which is 4.1 miles from the second location, according to Schepman. A woman was shot this time.

“We encourage anyone who has information about the shootings to come forward,” he said. “The community is a great partner in solving crimes.”

No suspect descriptions are available, and police have not offered updates on the conditions of those hurt.

St. Francis Center serves as many as 600 homeless men and women daily.

Police had left the scene Tuesday morning as dozens of people got in line for breakfast.

“I almost stepped in it,” Nicki Bridges, homeless for the past two years, said of the blood stain 50 yards from the center’s front door. “Oh, my gosh, he must have been bleeding profusely.”

Reggie Freeney, 47, saluted as he walked past the stain.

“It’s senseless. I think this is outrageous,” said Freeney, who has been on streets since 1996. “It’s gotten worse in the last 10 years.”

St. Francis executive director Tom Leuhrs said the shelter is open only during the day and most of its clients go to overnight homeless shelters when it closes at 6 p.m.

“Usually the violence is related to drug activity,” Leuhrs said. “It’s kind of constant.”

He said it is unlikely that whoever fired the shots was targeting homeless people randomly.

Deb Jacobson, 45, lives behind where the second shooting happened, at 24th and Glenarm, and said she heard five distinct gunshots.

“I sat straight up in bed,” she said. She was about to call police when the first patrol car arrived.

She said there has been “a lot of problems with gangs and drugs in the area. A lot of gang members selling drugs to homeless people.”

Another neighbor, Steve Jacobs, was up getting ready to make an early-morning trip to airport. He said he first heard six shots then a pause and four more shots.

Maria Castorena, 22, said the shooting in front of her Park Hill home on the 3600 block of Forest Street “was really weird.” She watched as people helped a wounded person into a neighbor’s house.

Juan Carlos Negron, 21, said he was awakened by gunshots just after 5 a.m. coming from a few houses away.

“Boom, boom, boom,” he said, while smoking a marijuana joint on the front steps of his home. “I wake up. I’m scared. I turned off the lights in my house. I told myself I’m not going outside for anything.”

Kirk Mitchell: 303-954-1206, kmitchell@denverpost.com or @kirkmitchell or denverpost.com/coldcases