Federal authorities have focused their search for murder and kidnapping suspect Travis Decker on Idaho's Sawtooth National Forest.

Travis Decker, accused of murdering his three daughters in Washington, was possibly seen in Idaho's Sawtooth National Forest, prompting authorities to seek public assistance in the ongoing search.

According to a press release from the U.S. Marshals Service Greater Idaho Fugitive Task Force, a man matching Decker's description was seen by a family in the Bear Creek area of the Sawtooth National Forest. The vast reserve encompasses over two million acres of land across Idaho and Utah, and will now be the focus of authorities' search efforts.