Salt Lake City police say Mark Hacking has been arrested for aggravated murder in the case of his missing pregnant wife.
Lori Hacking's body hasn't been found. Authorities plan to resume their search at a landfill this week.
The investigation took a grim turn over the weekend when her relatives asked volunteers to stop looking for her in response to new information from Mark Hacking.
Lori Hacking was reported missing July 19th. The day after her disappearance, Mark Hacking was taken to the psychiatric ward after
he was seen running around at night naked outside a motel where
he'd taken a room.
Since she was reported missing, Mark Hacking's credibility has crumbled amid revelations that he lied to her about enrolling at medical school in North Carolina, and about graduating from the University of Utah.