Their father, Travis Decker, is still on the run.

Decker — charged with one count of kidnapping and three counts of first-degree murder – remains the subject of an intense search, with authorities hoping that the public may assist in helping to locate him.

It’s previously been speculated that 32-year-old Decker is using his military training to stay hidden, with other reports speculating that he may have even scoped out a hiding hole in advance of committing the atrocity. Decker served in Afghanistan in 2014, later transferring to the Washington National Guard.

Federal authorities are said to have taken over the search on June 8 after local officials said they needed assistance.

“We had reached a point where we need to rest our local resources,” the statement said, as per Fox