Police say gunman who killed 1, hurt 4 at Minnesota clinic was ‘unhappy’ with his healthcare

BUFFALO, Minnesota -- One person was killed and four others wounded after a mass shooting Tuesday at a Minnesota health clinic, with the suspected gunman taken into custody by police.

Law enforcement is "very familiar with the suspect," identified as 67-year-old Greg Ulrich of Buffalo, said Buffalo Police Chief Pat Budke and Wright County Sheriff Sean Deringer.

Authorities believe this was a targeted incident at the Allina Health Clinic Crossroads campus and that the suspect acted alone, Budke and Deringer said.

"There is no information at this point that leads us to believe there is any nexus with any type of domestic terrorism," Budke said.

Five patients were transported from the clinic to local hospitals after the shooting, which was reported at 10:54 a.m., with one of the victims later dying, said Hennepin County Medical Center spokeswoman Christine Hill.

A representative of North Memorial Health Hospital said one of the wounded was discharged and three others were in critical, but stable condition.

The shooting suspect also appeared to have improvised explosive devices, Minnesota Gov. Tim Walz said.

After the victims were removed from the building, the sheriff's team conducted a secondary search of the facility, which yielded a suspicious package in the corner of the lobby, the police said. The sheriff’s team contacted the Minneapolis bomb squad, who was on the scene for much of the afternoon.

Deringer told reporters his office and Buffalo police had received "several calls for service calls" regarding Ulrich dating back to 2003. The sheriff said the suspect was living at a Super 8 Motel in Buffalo.

Officers evacuated the motel and found suspicious devices inside, according to Deringer.

Ulrich has lived in the Buffalo community "for quite a long time" and "has had contact with the health care community during that time," according to Budke.

"There's a history of him being unhappy with the health care he received," he said.

The clinic’s website describes the facility where the attack occurred as a convenient health care option that is part of a family clinic.

Minnesota Sen. Amy Klobuchar tweeted that Buffalo, a city with a population of about 16,000 residents about 50 miles northwest of Minneapolis, is "not far from where I grew up."

"So sad for all those there at clinic and those injured and praying for their recovery," she tweeted. "Thanks to those saving lives right now. Gun violence must stop."

Ulrich will likely appear in court Thursday, officials said.

Agents from the Minneapolis/St. Paul field division of the federal Bureau of Alcohol, Tobacco, Firearms and Explosives also responded to the scene to assist in the investigation of the "active shooter," a spokesperson told ABC News.