The search for Travis Decker, the father accused of killing his three young daughters, has shifted as the manhunt entered its fourth week, authorities said.

It’s believed that 25 days ago 32-year-old Travis Decker killed his three daughters – 5-year-old Olivia, 8-year-old Evelyn and 9-year-old Paityn – at the Rock Island Campground in Leavenworth, Wash., then fled on foot into the nearby mountains.

Authorities belive Travis Decker, who is suspected of murdering his three young daughters and fleeing into the mountains near Wenatchee.The K