He's not a suspect, but the husband of a missing pregnant woman who apparently vanished during a morning run hasn't been completely honest with his own family.
Mark and Lori Hacking have been married almost five years, and she learned last week that she is five weeks' pregnant.
They planned to move next week to Chapel Hill, N.C., where Mark Hacking told family members he planned to attend medical school at the University of North Carolina.
However, family members have learned he did not graduate from the University of Utah, as he claimed, nor did he apply to medical school.
"I have no explanation for this new development," his father Douglas told reporters.
"We are heartbroken that he felt he couldn't share that with those who loved him, but we're not letting it distract us from the search for Lori," his brother Lance Hacking told CBS News Early Show co-anchor Julie Chen.
"I was profoundly stunned," Lori's mother Thelma Soares added.
Mark Hacking was in the psychiatric unit of a hospital Thursday morning, reported Mark Koelbel of CBS station KUTV. Lance Hacking confirmed that his brother is in a hospital.
The University of Utah said Hacking was enrolled from spring 1999 to fall 2002, majoring in intermediate psychology, but never graduated. The University of North Carolina said he never applied.
"We're not naming him as a suspect, but we have not cleared him either. So we're looking carefully at every aspect of Lori's life prior to her disappearance and after as well," police detective Dwayne Baird said on The Early Show.
Doug Hacking said the couple were not having any marital problems.
Police Chief Rick Dinse tells Ben Winslow of CBS radio affiliate KSL he believes foul play may be involved.
"We have an investigation going on into the disappearance of a young lady under suspicious circumstances," Dinse said.
Meanwhile, the search for Lori continues, reports Koelbel. On Wednesday, the search area moved out of the canyon and into nearby neighborhoods.
Volunteers took fliers door-to-door in downtown Salt Lake City neighborhoods in their search for Lori, who hasn't been seen since going for a run Monday morning. The volunteers also knocked on doors and asked questions.
More than 1,200 volunteers scoured the Memory Grove Park and City Creek Canyon area where Hacking, 27, was last seen. The canyon was searched twice Tuesday, but there were no signs of Hacking.
Hacking left her Salt Lake home around daybreak Monday for a run, Baird said. After she failed to show up at work later, her husband, Mark Hacking, called police, Baird said.
Her car was found parked near the front gates of the park. The car and one belonging to her husband were impounded by police.
Police also seized items from the couple's apartment near the University of Utah. Authorities would not say what they removed, but television news footage showed paper bags, boxes and a box spring being taken from the residence.
Police impounded a large trash bin as well, "somewhere between Memory Grove and the apartment," Detective Kevin Joiner said.
There is a Web site to aid in the search, www.findlori.com, and a telephone number, 801-799-3000.