A member of the crime lab walks in front of a home Tuesday, Dec. 31, 2019, in West Valley City, Utah. A Utah mother is suspected of killing her 4-year-old daughter, The woman knocked on her neighbor's door in a Salt Lake City suburb early Tuesday morning and told them she had killed her daughter, West Valley City police said in a news release. Officers went to the house and found the woman waiting on the porch and the dead child in the basement of her home. (AP Photo/Rick Bowmer)

A member of the crime lab walks in front of a home Tuesday, Dec. 31, 2019, in West Valley City, Utah. A Utah mother is suspected of killing her 4-year-old daughter, The woman knocked on her neighbor's door in a Salt Lake City suburb early Tuesday morning and told them she had killed her daughter, West Valley City police said in a news release. Officers went to the house and found the woman waiting on the porch and the dead child in the basement of her home. (AP Photo/Rick Bowmer)

SALT LAKE CITY (AP) — A Utah mother has been arrested on suspicion of murder after telling a neighbor she killed her 4-year-old daughter, police said Tuesday.

Officers found Nicole Lester, 29, sitting in bloody clothes outside her house in West Valley City after she called police about 5 a.m. to turn herself in, according to a probable cause statement

Officers discovered the girl, Laney Vos, dead in the basement of the home, with many “sharp-edged type wounds” on her body, the document said. Lester declined to say anything more to officers when they arrested her.

It is unknown if Lester has an attorney.

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She was being held without bail on suspicion of aggravated murder. She has not yet been formally charged.

The neighbor told police that Lester came to her house early Tuesday to borrow a phone, and when she returned it, she told the neighbor she had killed her daughter, the document says.

Police also found Lester’s 6-year-old son sleeping in the home, unharmed, said Roxeanne Vainuku, a police spokeswoman. Lester lives in the home with the two children and her mother, who was not home at the time, she said.

Lester doesn’t have a criminal record or history of violence, Vainuku said.

Crime lab technicians could be seen coming and going from the house while officers served a search warrant during their investigation.

Valley City has 136,000 residents and is located about 10 miles southwest of Salt Lake City.