ABC News September 4, 2020

Clothes, ammunition tied to fatal Portland protest shooting found in suspect's home: Officials

WATCH: Tension heightened in Portland following death of shooting suspect

Police found clothing and ammunition connecting a suspect killed during an encounter with authorities Thursday to the death of a pro-Trump protester in Portland, Oregon, days earlier, officials said.

Michael Reinoehl, 48, was wanted for murder in the second degree with a firearm and unlawful use of a weapon with a firearm, the Multnomah County District Attorney's Office said Friday, when he was located by the FBI and U.S. Marshals in Lacey, Washington.

MORE: Fear has infiltrated the streets of Portland: Reporter's Notebook

The district attorney's office was preparing to prove that Reinoehl intentionally killed 39-year-old Aaron Danielson during violent protests last weekend between a large caravan of pro-Trump supporters and Black Lives Matter protesters. On Friday, it released previously sealed evidence in its case, including the search warrant and arrest warrant affidavits for Reinoehl.

Reinoehl was under surveillance Thursday night when he left an apartment and got into a vehicle, officials said. When officers tried to stop the vehicle, shots were fired and the suspect was killed. Reinoehl allegedly pulled a gun, a law enforcement official told ABC News. There were no other injuries, officials said.

Nathan Howard/Getty Images
Investigators work near a tarp covering on Sept. 3, 2020 in Lacey, Washington.

During the execution of a search warrant issued Thursday for Reinoehl's residence, Portland police recovered clothing that matched what he was wearing on Aug. 29, at the time of Danielson's death, according to the district attorney. They also found ammunition that matched the ballistic evidence recovered from the crime scene, authorities said.

The shooting death of Reinoehl is still being investigated, said Multnomah County District Attorney Mike Schmidt, who did not share more details on the incident.

MORE: Suspect sought in connection of deadly Portland shooting killed during encounter with authorities

"We still do not have a full understanding of what led to the death of Michael Forest Reinoehl," Schmidt said in a statement.

"The apprehension of a fugitive, in particular one under investigation for murder, is especially dangerous for law enforcement," he continued. "I am thankful that no one else was injured or killed during last night's incident in Lacey, Washington, and I appreciate the coordination between law enforcement agencies throughout this investigation."

Beth Nakamura/The Oregonian via AP
Michael Reinoehl is seen during a protest in front of Mayor Ted Wheeler's residence, Aug. 28, 2020, in Portland, Ore.