BURIEN, Wash. -- Before he killed his wife and teen daughter and retreated to a remote bunker in Washington's Cascade Mountains, Peter Keller recorded a video explaining his mindset: He was bored.

"It's getting to the point where just trying to live and pay bills and live as a civilian and go to work, that just freaks me out," the 41-year-old survivalist said in a video clip released Thursday by the King County Sheriff's Office. "It's actually more comfortable for me to think about living out here, robbing banks and pharmacies, just taking what I want for as long as I can. At least it'll be exciting."

Keller shot his wife, Lynnette, and his 18-year-old daughter, Kaylene, at their home in North Bend, east of Seattle, in April. He set canisters of gasoline on the kitchen stove, turned it on, and headed to a fortified, camouflaged bunker he had spent the past eight years building into the steep, thickly forested slope of Rattlesnake Ridge. King County sheriff's detectives spent days trying to figure out where he was.

They narrowed down his hiding spot with tips from the public, who had seen Keller's red pickup at the Rattlesnake Ridge trailhead; a photo taken from the bunker that showed outlet stores in the distance; and the work of trackers who saw his boot-prints in the muddy ground. Keller killed himself as dozens of SWAT officers moved in – an outcome he predicted in his video.

Looking down into a handheld camera, with his head wreathed by evergreen trees and the blue sky, Keller stated flatly: "If I get caught, I'm just going to shoot myself. I could be dead in two weeks or three weeks, I don't know. It's all up to chance at this point."

He added: "I do have my escape and it's death. Shoot myself. I'm OK with that. ... I won't have to worry about Lynnette or Kaylene. Everything'll be taken care of. It'll just be me."

The sheriff's office said it was releasing the video now because recent forensic tests recently proved that one of Keller's guns was used in the murders. There were no other suspects.

"The family didn't really find there was a problem with Peter," said Lynnette's twin brother, Gene Rocha. He described Keller's relationship with his daughter as loving.

"We'd go there for holidays and it was like every father-and-daughter relationship," he said. "She'd look at her father and say, `Daddy, can I have this?' And he'd say, `Sure.'"

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  • Peter Keller

    This image from video provided by the King County Sheriff's Office Thursday July 12, 2012 shows Peter Keller recording a video explaining why he killed his wife and daughter and retreated to a remote bunker in Washington's Cascade Mountains. He was bored. Keller shot his wife, Lynnettee, and his 18-year-old daughter, Kaylene, at their home in North Bend, east of Seattle, in April. (AP Photo/King County Sheriff's Office)

  • Peter Keller

    A television camera operator shoots on the lower level of a multi-level bunker dug into the side of a remote ridge where murder suspect Peter Keller died days earlier, Monday, April 30, 2012, near North Bend, Wash. Keller spent eight years carving his hole in the side of the mountain, camouflaging the rugged underground bunker with ferns and sticks and stocking it with a generator and ammunition boxes sealed in Ziploc bags. Suspected in the deaths of his wife, daughter and pets last weekend, he headed there prepared for the long haul with high-powered rifles, scope and body armor. Police pumped in tear gas, called for him over bullhorns, and, after 22 hours, set off explosives along the top of the bunker Saturday. He was found dead of a self-inflicted gun shot. (AP Photo/Elaine Thompson)

  • Peter Keller

    Doug Williams, of the King County DNR, points out items lining shelves in a multi-level bunker dug into the side of a remote ridge where murder suspect Peter Keller died days earlier, Monday, April 30, 2012, near North Bend, Wash. Keller spent eight years carving his hole in the side of the mountain, camouflaging the rugged underground bunker with ferns and sticks and stocking it with a generator and ammunition boxes sealed in Ziploc bags. Suspected in the deaths of his wife, daughter and pets last weekend, he headed there prepared for the long haul with high-powered rifles, scope and body armor. Police pumped in tear gas, called for him over bullhorns, and, after 22 hours, set off explosives along the top of the bunker Saturday. He was found dead of a self-inflicted gun shot. (AP Photo/Elaine Thompson)

  • Peter Keller

    In this image released by King County Sheriff's Office and taken from the suspects hard-drive on Saturday, April 28, 2012 shows a bunker that deputies say belongs to a man suspected of killing his wife and daughter. After a 22-hour standoff, police blew the top off the rugged mountain bunker near Seattle on Saturday, only to find their target dead of a self-inflicted gunshot wound inside. Authorities had not positively identified the body as 41-year-old Peter Keller, who hadn't been seen since his wife and daughter were found shot to death last weekend, King County sheriff's Sgt. Katie Larson said. (AP Photo/King County Sheriff's Office)

  • Peter Keller

    Journalists and officials peer into the top of a multi-level bunker dug into the side of a remote ridge where murder suspect Peter Keller died days earlier, Monday, April 30, 2012, near North Bend, Wash. Keller spent eight years carving his hole in the side of the mountain, camouflaging the rugged underground bunker with ferns and sticks and stocking it with a generator and ammunition boxes sealed in Ziploc bags. Suspected in the deaths of his wife, daughter and pets last weekend, he headed there prepared for the long haul with high-powered rifles, scope and body armor. Police pumped in tear gas, called for him over bullhorns, and, after 22 hours, set off explosives along the top of the bunker Saturday. He was found dead of a self-inflicted gun shot. (AP Photo/Elaine Thompson)

  • Peter Keller

    Doug Williams, of the King County DNR, stands near the lower exit of a multi-level bunker dug into the side of a remote ridge where murder suspect Peter Keller died days earlier, Monday, April 30, 2012, near North Bend, Wash. Keller spent eight years carving his hole in the side of the mountain, camouflaging the rugged underground bunker with ferns and sticks and stocking it with a generator and ammunition boxes sealed in Ziploc bags. Suspected in the deaths of his wife, daughter and pets last weekend, he headed there prepared for the long haul with high-powered rifles, scope and body armor. Police pumped in tear gas, called for him over bullhorns, and, after 22 hours, set off explosives along the top of the bunker Saturday. He was found dead of a self-inflicted gun shot. (AP Photo/Elaine Thompson)

  • Peter Keller

    King County Sheriff's Sgt. Jesse Anderson peers into a multi-level bunker dug into the side of a remote ridge where murder suspect Peter Keller died days earlier, Monday, April 30, 2012, near North Bend, Wash. Keller spent eight years carving his hole in the side of the mountain, camouflaging the rugged underground bunker with ferns and sticks and stocking it with a generator and ammunition boxes sealed in Ziploc bags. Suspected in the deaths of his wife, daughter and pets last weekend, he headed there prepared for the long haul with high-powered rifles, scope and body armor. Police pumped in tear gas, called for him over bullhorns, and, after 22 hours, set off explosives along the top of the bunker Saturday. He was found dead of a self-inflicted gun shot. (AP Photo/Elaine Thompson)

  • Peter Keller

    In this photo provided by the King Co. Sheriff's Dept., an assortment of weapons that were found in a deep-woods bunker, Saturday, April 28, 2012, near North Bend, Wash. are displayed after they were removed by deputies. Officials also found a body in the bunker that is believed to be Peter A. Keller, who is suspected of hiding out in the bunker after killing his wife and daughter last week. (AP Photo/King Co. Sheriff's Dept., Cindi West)

  • Peter Keller

    In this photo provided by the King Co. Sheriff's Dept., bullet-proof vests and other items that were found in a deep-woods bunker, Saturday, April 28, 2012, near North Bend, Wash. are displayed after they were removed by deputies. Officials also found a body in the bunker that is believed to be Peter A. Keller, who is suspected of hiding out in the bunker after killing his wife and daughter last week. (AP Photo/King Co. Sheriff's Dept., Cindi West)

  • Peter Keller

    This undated photo provided by the King County Sheriff's Office shows Peter Keller. After a nearly 23-hour standoff, police blew up the top of an elaborate bunker in the Cascade Mountains on Saturday, April 28, 2012, and found the body of a man inside -- believed to be that of Keller, a survivalist wanted in the deaths of his wife and daughter last weekend. The suspect appeared to have shot himself, King County sheriff's Sgt. Katie Larson said. Officials were awaiting positive identification of the body. (AP Photo/King County Sheriff's Office)