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NSQUALLY RESERVATION, Wash. (KOMO/CNN) - Authorities in Washington state are searching for more remains after a dog came home with a human leg.

The gruesome discovery was made last week, and on Sunday investigators found more body parts.

"I didn't know what to think. To be honest with you, I was scared," said Bill Flowers.

At 93-years-old, Flowers has seen a lot, but nothing quite prepared him for what he found in his own front yard.

"I got up one morning about 8:30. I was going to feed my dogs and this dog here was standing over that leg," he said.

His dog, Liberty, dragged home a human leg and was standing over it.

"I examined it. I picked it up and looked at the toes and nothing. None of the leg or foot was damaged, from the knee down it wasn't damaged at all," said Flowers.

Flowers says the leg was gray in color and appeared it was dismembered about four inches from the buttocks.

"I had a funny feeling. I thought should I call the police. I says, 'No I'll just take it and bury it,'" said Flowers.

Reporter: "You were gonna bury it?"

Flowers: "Yep, I buried it in a plastic bag. I put it in a good plastic bag and buried it."

That was on Tuesday. Flowers didn't call law enforcement until four days later, on Saturday afternoon.

"I was I was afraid to call. I'm 93-years-old. I didn't want to have to go to the pen for something I didn't do," said Flowers.

"When I got home he told me, and I said, 'Dad, we have to call the police,'" said his daughter, Cheryl Flowers.

Detectives put a GPS collar on the dog hoping she would lead them to the rest of the body, but it was search and rescue dogs who found more remains of a pelvis and rib cage in the woods at the old fish hatchery.

Liberty has brought home shoes and other animals, but her owners say nothing as startling as human remains.

A pathologist will look at the body parts to figure out if it's a man or woman. They'll also look at the bones to see what kind of instrument might have been used to dismember the body.

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