"I asked him if he had any idea where his wife, my daughter Susan, would be. And he said he didn't. He was sincere sounding when he said that. I believed that," Cox told "GMA." When asked if he still believed his son-in-law, Cox replied, "I don't know what to think anymore."
Joshua Powell attended a vigil for his wife in Washington on Sunday, to the surprise of the Cox family who organized the event.
"We have no contact of Josh at all," Cox said Sunday. "I didn't know he was coming up here."
Joshua Powell stood with his son, 4-year-old Charlie, in a chilly downpour Sunday night with dozens of others at the candle-lit vigil and spoke briefly with Susan's sister, The Associated Press reported.
The Powells were reportedly seeing a marriage counselor and facing daunting financial problems. The Salt Lake Tribune reported the two had filed for bankruptcy, and public records revealed they were $200,000 in debt, including large amounts of credit card debt and student loans.
Anyone with information regarding the case can call West Valley City Police at (801) 840-4000.