The manhunt for the Washington father accused of killing his three young daughters has expanded as federal and state law enforcement officials continue to comb through the dense wilderness in search of the military-trained survivalist. 

Authorities said this week that they are combing through the Teanaway Valley and Blewett Pass areas as the search for Travis Decker continues into its third week, according to the Kittitas County Sheriff’s Office. 

“If you have trail cameras or doorbell cameras, please check them for suspicious activity,” the department said in a statement. “If you have residences in these areas, check them for anything missing – no matter how small or seemingly insignificant.” 

Authorities have released an updated flyer showing possible alternations Travis Decker could have made to his appearance as he remains on the run. (Chelan County Sheriff’s Office )

Officials also quashed a TikTok video reportedly showing CCSO Sheriff Mike Morrison announcing Decker’s arrest after a long standoff. 

“To be clear, Mr. Decker is not in custody and CCSO had no part in making the video,” the department wrote in a Facebook post. 

The U.S. Marshals Service has taken on the role of lead agency in the hunt for Decker, who is a former member of the military with extensive experience in wilderness survival. The Washington National Guard is also assisting local law enforcement with aerial search efforts and surveillance.

Officials warn that Decker is considered armed and dangerous but do not have reason to believe he is a threat to public safety. 

The U.S. Marshals Service is offering a $20,000 reward for information leading to Decker’s arrest. He is charged with three counts of aggravated first-degree murder and kidnapping.