The police report also detailed some of the evidence seized on July 19. That evidence included papers, two T-shirts that said "Big Rock" and "West Seattle Acid Party," a hat, orange twine, pillow, pillow cases, bedding packages, men's athletic shoes size 11, a blue and white plaid shirt and a pair of men's denim jeans.

Neither police nor the families commented on the report. "I haven't seen the report. I have no response whatsoever," said police spokesman Dwayne Baird.

Hacking was booked into the Salt Lake County Jail at 11:46 a.m. Monday. He was under suicide watch Monday, Dinse said. The jail's probable cause statement is very short, saying only that the arrest was made based on information provided by a confidential informant.

The body of Lori Hacking had not been recovered as of Monday. But Dinse said investigators with cadaver dogs would return Wednesday to the Salt Lake landfill, 6030 W. California Ave. (1400 South).

"We have information that leads us to believe that's where she is," Dinse said.

Dinse said detectives had collected "substantial" and "sufficient" evidence from several places, including the Hackings' apartment, where Dinse said he believed the slaying occurred. Other sources of evidence, Dinse said, included witnesses, Lori's car and a Dumpster seized from the parking lot of an LDS meetinghouse about a block away from the apartment.

Lori Hacking's mother, Thelma Soares, issued a written statement and appeared at a brief 5 p.m. news conference at Orem City Hall. Soares laced her fingers and held her hands close to her chest as if in prayer and dabbed tears from her eyes with a tissue as the statement was read.

"My family and I are profoundly anguished to lose Lori, our precious daughter and sister. Our lives will never again be the same, and we will grieve for her and miss her until the day we die," read Scott Dunaway, a family friend who has served as a spokesman for the families. "But when that day finally arrives, we know with absolute certainty that she will be there with open arms to greet us, and our reunion as a family will be glorious. Until then, we know where she is and who watches over her."

The Hacking family was silent about Mark's arrest and did not appear at the press conference.

Their absence doesn't necessarily reflect a rift in the unity the Hacking and Soares families have exhibited over the past two weeks in which they repeatedly stated their mutual love for Lori and Mark.

Thelma Soares seemed to reinforce that bond in her Monday statement, stating that both families had suffered a great deal.

"To the wonderful Hacking family who has shared this double tragedy with us: May Heavenly Father strengthen you in the difficult days ahead," she wrote. "You know of our love for you."