Family Believes Concussion Led to Colorado Father's Disappearance

Oliver Pareece Jones was last seen in California on April 5.

"We're thinking that his concussion really affected his ability to reason or be able to do anything," said his brother Jared Jones.

On his way from Los Angeles to Las Vegas, Jones, 37, stopped in Rancho Cucamonda and purchased some items at a local Walmart, police said.

Paul Huebl, a private investigator hired by Hones' family, told KABC-TV many of the items he bought were found in the possession of a transient after Jones' disappearance.

"It doesn't make sense because it's kind of expensive stuff: a cell phone, a radio, some other things," he said.

The family hasn't heard from Jones since and claims he ordinarily calls his daughters every day.

"If there's a little bit of hope, we're going to hold onto that," his brother told KABC-TV.