A woman who disappeared when she reportedly went out for a jog remained missing Saturday, after days of police efforts that have included the use of cadaver dogs and a search of a municipal landfill.

Salt Lake City police detective Dwayne Baird met for more than an hour on Saturday with the family of Lori Hacking, 27, who has been missing since Monday and is reportedly five weeks pregnant.

Baird said police were at the landfill following up on leads a few days ago, but he could not provide any further details. He also said he does not believe investigators have met with the woman's husband, Mark Hacking, since Wednesday. He has been in a psychiatric hospital since police found him on Tuesday running naked around a motel not far from his home.

Mark Hacking, 28, has been called a person of interest, not a suspect, in the case. Speculation about his credibility was fueled by news that he never graduated from college or applied for medical school. He had told friends and family that he was headed to medical school in North Carolina; Lori Hacking vanished days before the couple's scheduled move.

Mark Hacking also had initially said that his wife did not wake him up, as usual, after coming home from an early morning jog, and that she did not show up for work. But police confirmed on Friday that Mark Hacking was at a furniture store buying a new mattress just before reporting to police that Lori was missing.

Baird said police were checking a timeline provided by Hacking on the day his wife disappeared, one that he noted police consider puzzling.

"Because of the deception, we have to look at all aspects of what he has done," Baird said.

Mark Hacking has the support of many of his and his wife's relatives, but Lori Hacking's father expressed doubts about his son-in-law after visiting him at the hospital.

Eraldo Soares told Fox News that his son-in-law told him he would never hurt Lori Hacking "with the same face he used to tell me about school."

"Now I don't believe him," Soares said.

Douglas Hacking said on Friday that his son told him he had nothing to do with his wife's disappearance.

A poster on Lori Hacking is posted along the route of the Days of '47 parade in Salt Lake City. Hacking, who is pregnant, has been missing since Monday.