GRAND JUNCTION, Colo. -- The search for a missing 34-year-old mother and her 6-year old daughter yielded no new leads by Saturday afternoon as the cost of the investigation - both money and resources - begins to mount for the Mesa County Sheriff's Deparment.

The investigation is costing the county roughly $8,000 a day, Mesa County Sheriff's spokeswoman Janet Prell told Grand Junction's KJCT-TV Saturday.

"We are using a dedicating an awful lot of resources to this investigation," Prell said Saturday.

Prell said her department has a core group of 16 investigators who have been working 12 to 16 hour days since early last week on the unsolved suspected murder.

Jennifer Blagg and her daughter, Abby (pictured, left), have been missing since Tuesday.

Michael Blagg said that he came home from work and found a large pool of blood on a mattress in the master bedroom and his wife and daughter gone.

Authorities said the blood was human and indicated a possible struggle.

"From the amount of blood, it's clear something very violent happened," Mesa County District Attorney Frank Daniels told the Rocky Mountain News.

Authorities said that Michael Blagg is not a suspect.

During a Friday morning news conference, Michael Blagg asked the public to help in the search for his wife and daughter.

"Anyone who knows anything about my wife and daughter, please come forward," Blagg said. "Please let them go. That's all I want."

Officials suspended their search for the night Thursday after checking hospitals and Colorado River hiking trails and fields.

"We're very concerned about their welfare," Prell said. "Somebody has suffered a very significant injury."

Blagg, a stay-at-home mother who volunteered as a teacher's aide at Bookcliff Christian School, was presumed sick when she failed to show up at the school Tuesday.

Investigators have discounted an earlier report of a mysterious telephone call to the school reporting that Abby was sick. The attendance official at Bookcliff excused Abby on her own when she didn't show up Tuesday morning, knowing that her mother was sick on Monday, officials said.

Jennifer Blagg's car was still in the garage at the house.

"There are a lot of components to this investigation which are not explainable right now," Prell said.

Blagg last talked to his wife Monday night and said he saw her before he left for work at 6 a.m. Tuesday. He called police at 4:20 p.m. to report his wife and daughter missing.

"We don't know yet what this is," said Prell.

On Thursday, investigators gathered evidence at the secluded house. "A crime scene will tell you a story if you take the time to listen to it," said Prell.

"They are missing," sheriff's investigator Steve King told the Grand Junction Sentinel. "Anything beyond that is just guessing. We don't guess. We go on facts. And the facts are two people are missing and we are dedicating a huge amount of resources and people to solve that problem."

Mesa County Sheriff Riecke Claussen said he has assigned 16 officers full-time to the investigation. In addition, the Colorado Bureau of Investigation is assisting in the case.

Investigators said that the family had moved frequently in the last 10 years. They have lived in Texas, California, Arizona and South Carolina. They moved to their current home last January, Prell said.

Anyone with information about the case is asked to call the sheriff's department at (970) 244-3500 or Crime Stoppers of Mesa County at (970) 241-7867.