The manhunt for the missing Washington father accused of killing his three daughters has authorities closing in on an area where he is believed to be hiding. 

Law enforcement searching for Travis Decker began zeroing in on the Ingalls Creek and Valley High areas late Monday night after receiving a tip from a group of hikers regarding an individual along a nearby trail that appeared evasive and unprepared, according to the Chelan County Sheriff’s Office (CCSO). 

“Our office recently received a tip from a hiking party who stated they spotted a lone hiker in the Enchantments area who appeared to be ill-prepared for trail and weather conditions, and appeared to be avoiding others,” the sheriff’s office said in a press release. 

Decker’s ex-wife, Whitney Decker, 35, told police Decker suffers from mental health issues – including borderline personality disorder – but had always returned the couple’s children on time following a visit, according to a CCSO affidavit.  

Decker is described as standing approximately 5 feet, 8 inches tall and weighing about 190 pounds. Authorities are offering a $20,000 reward for information leading to Decker’s arrest and have indicated he is considered to be armed and dangerous. 

If convicted, Decker could face a maximum sentence of life in prison without the possibility of parole.