Law enforcement officials described the gunman as a disgruntled former patient.

Police believe he acted alone in the attack.

Sheriff Sean Derringer.

So I will identify the suspect is Gregory Paul.

You'll Rick?

He's 67 years old.

He is from Buffalo.

We do believe that Mr You'll Rick did act alone.

We're not looking for any additional suspects.

You'll.

Rick was taken into custody after Tuesday's violence, which included an explosion 30 minutes after the shooting.

That's according to local media reports.

Citing emergency dispatch, audio authorities told reporters that they weren't able to confirm the reports of an explosion and that there was no reason to believe it was a terrorist attack.

You'll Rick had been well known to authorities receiving complaints as far back as 2003.

Buffaloes chief of police said the attack was most likely related to an unspecified past conflict between the suspect and local health care providers.

Your IQ was scheduled to appear for arraignment related to that case on Thursday, Sheriff Derringer said.

Bomb squad investigators were called to the scene to examine a suspicious package found in the corner of the clinics lobby and additional devices found at a nearby motel where you'll Rick had been staying.

The five people wounded in the attack were taken to hospitals, but it's not known whether the victims were clinic patients or staff.

One later died, according to the county's medical spokeswoman.