A boy who fatally shot a Snohomish County woman he mistook for a bear while hunting was sentenced today to 30 days in juvenile detention, KING-TV is reporting.

The boy, 15, was found guilty last month of second-degree manslaughter. He was 14 when he mistook Pamela Almli, 54, for a bear last August and shot her during a hunting trip on Sauk Mountain.

According to police reports and court documents, the boy and his older brother had been taken to Sauk Mountain by their grandfather to hunt bear on Aug. 2. The older boy was 16 at the time. Their grandfather remained in his truck at the trailhead, according to court documents.

Fog was heavy that day, the boys later told investigators, and in some places they could see only 20 feet ahead of them. They decided to hike the mountain instead of hunting but they brought their rifles with them "just in case," court documents say.

On the way back down, the younger brother saw movement and a "black outline" on the trail about 100 yards in front of them, according to the documents.

The boys both had rifles with 3X-magnification scopes, and both looked through their scopes for "a few minutes" before the younger boy said, "It's a bear, it's a bear," and, "I've got my cross hairs on it," the documents say. The older boy looked, agreed with his brother and told the younger to go ahead and pull the trigger.

The boys raced down the mountain only to find Almli's body.

After a five-day bench trial, Skagit County Superior Court Judge Susan Cook early last month acquitted the younger boy of first-degree manslaughter, finding there was insufficient evidence to prove the boy knew there was a substantial risk his target could be a person. She decided in favor of the second-degree charge because the boy had been negligent and unaware of risks he should have known about.