Authorities are narrowing their search for a father in Washington state accused of killing his three young daughters last week .

The Chelan County Sheriff's Office said an individual they believe may be 32-year-old Travis Decker was seen near Ingalls Creek Trailhead on Highway 97 just south of Leavenworth.

Deputies said they received a tip from a hiking party in the Enchantments about a lone person who appeared to be unprepared for hiking and trying to avoid other people.

Investigators were able to track the suspicious person via helicopter hiking off-trail near Colchuck Lake. The hiker ran out of sight of the helicopter. Additional teams were able to track the person with K-9 units near the highway.

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