The manhunt for the Washington father accused of killing his three daughters before disappearing into the remote wilderness has intensified after campers in nearby Idaho reported a potential sighting over the holiday weekend. 

According to the U.S. Marshals Service Greater Idaho Task Force, a family reported seeing a man resembling 33-year-old Travis Decker while camping in the Bear Creek area of Sawtooth National Forest on July 5, Fox 13 reported. 

The family described the man as wearing a black mesh cap, a cream-colored shirt, black shorts, black gauged earrings and standing at 5’8″ to 5’10″ tall, according to the outlet.

The individual was reportedly carrying a black Jansport backpack and had a long ponytail and overgrown facial hair. He was wearing a black watch and either Vans or Converse low-top shoes.

The U.S. Marshals Service released new photos detailing the challenging and extensive search for Travis Decker, accused of killing his three daughters. (U.S. Marshals Service)

The girls’ mother, Whitney Decker, spoke publicly about the loss of her children last month. 

“I truly hope that the legacy of the girls’ lives on in everyone’s heart forever,” she said at a June 20 memorial service, according to Fox 13 Seattle. “They were incredible.” 

Authorities warn that Decker should be considered armed and dangerous but insist they have no reason to believe he is a threat to public safety. He is charged with three counts of aggravated first-degree murder and kidnapping.

The U.S. Marshals Service is offering a $20,000 reward for any information leading to Decker’s arrest.