Spokane, Washington — A Washington state lawmaker took part in "domestic terrorism" against the United States during a 2016 standoff at a wildlife refuge in Oregon and trained young people to fight a "holy war," according to an investigative report released Thursday.

The report prepared for the state Legislature said Representative Matt Shea, a Republican from Spokane Valley in eastern Washington, traveled throughout the West meeting with far-right extremist groups, condoned intimidating opponents and promoted militia training by the Patriot Movement for possible armed conflict with law enforcement. 

Shea was suspended from the state House Republican Caucus Thursday evening, advised by members of both parties to resign and will be removed from his committee assignments.

But in a Facebook post on Thursday night, he refused to step down.

"Like we are seeing with our President this is a sham investigation meant to silence those of us who stand up against attempts to disarm and destroy our great country. I will not back down, I will not give in, I will not resign," he wrote.

Shea said he has been denied any opportunity to review and respond to the report, prepared by an outside investigator. But according to the report, Shea declined to be interviewed as part of the probe.

The investigative team, headed by a former FBI agent and a former law enforcement officer, was hired in July. The incoming House Speaker, Democratic Representative Laurie Jinkins, said the report had been forwarded to federal prosecutors and the FBI. 

The team's findings, first reported by the news website Crosscut, said: "Investigators obtained evidence that Representative Shea planned, engaged in, and promoted a total of three armed conflicts of political violence against the United States ... in three states outside the State of Washington over a three-year period to include 2014, 2015 and 2016."

The report said Shea "participated in an act of domestic terrorism" when in 2016 he visited the Malheur National Wildlife Refuge to support its armed occupation by two sons of rancher Cliven Bundy.

Shea "engaged in conversations with Ammon Bundy and other militia members in the planning and preparation of the armed takeover of the Malheur National Wildlife Refuge in Burns, Oregon,″ the report said. He also issued a press release on December 11, 2015, asking for patriot and militia groups near the takeover to rally against the U.S. government.

After the occupation of the wildlife refuge ended, Shea posted on his Facebook page: "After much prayer, I'm afraid violence might be necessary to take our country back."

Shea also went to Cliven Bundy's Nevada ranch in 2014 during a standoff with FBI agents in a dispute over grazing rights. And in 2015, in Idaho, Shea resisted the planned removal of firearms from a military veteran who was not eligible to have them.

The report also said that Shea in 2012 engaged in intimidation when he posted a photo of himself on his Facebook page standing in front of a political opponent's home, and refused to remove the photo despite requests from his adversary, GOP officials and law enforcement.

A 2017 online chat indicated the lawmaker joined a discussion in which others suggested violence against left-wing protesters. Reports of the chat surfaced in the Guardian earlier this year and were expanded by The Spokesman-Review newspaper.

Based on chat transcripts, there's no indication Shea advocated violence himself, although he offered to do background checks on political opponents.

The texts came after Shea, a lawyer who was first elected in 2008, attracted international attention over a document he wrote that laid out a ''biblical basis for war″ against gay marriage and abortion. He later said that the document was taken out of context.

Shea has also pursued creation of a 51st state in eastern Washington that would be called Liberty and run on biblical principles.

The Army veteran hosts a weekly show on the American Christian Network and in 2017 complimented members of Team Rugged, a group that one member said provides special-forces-type gun training for young men so they can be effective in Christian warfare.

Shea last year lost a House leadership position after acknowledging he distributed the "biblical basis for war" document that also calls for killing non-Christian males who refuse to follow fundamentalist biblical law.

Shea is popular in his very conservative district and was re-elected in 2018 with 58% of the vote.