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 began zeroing in on the Ingalls Creek and Valley High areas late Monday night in the search for Travis Decker, according to the Chelan County Sheriff’s Office (CCSO). 

“Law enforcement is searching for suspect Travis Decker in the area of Ingalls Creek and Valley High as he is believed to potentially be in this area,” the sheriff’s office posted. “Please secure your homes and vehicles, stay alert, and report any suspicious activity to 911.” 

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 unsure if Decker is armed, but insist he is considered dangerous. 

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