Police believe a mother and daughter who were found dead in their home on New Year’s Eve died in a murder-suicide that occurred up to three weeks earlier.

The Salt Lake Tribune reported that the bodies of Karina and Madison Clark were discovered in their Magna, Utah, home after a fellow church member noticed a Christmas present that remained untouched on their front porch for several days and called police.

Unified police investigators now believe Karina, 41, shot and killed her 9-year-old daughter before turning the gun on herself. Responding officers reportedly found the pair dead with gunshot wounds and a rifle inside the home.

Speaking with KSTU, Madison’s oldest brother, Gibson Clark, claimed there was a history of trouble at the home. He said his mother’s sometimes-violent behavior tore the family apart. In addition to Gibson, Karina has two other children who are grown and out the home–leaving Madison to live alone with her mother.

“My mom was really troubled. We all grew up with her and we called Child Protective Services on her quite a bit,” he said.

Lieutenant Brian Lohrke revealed at a news conference that they believe the fatal shooting occurred at the Magna home between one and three weeks earlier.

“We’re not going to release how many [gunshots] or any of that. It’s a little too graphic,”Lohrke said, according to KUTV.

“It’s a tragic situation involving this 9-year-old daughter that was killed by her mother who obviously suffered some mental issues that tragically plague our society nowadays.”

Police are currently creating a timeline of when and where anyone saw Karina and Madison alive. They have yet to reveal a motive.

“Just be aware of those around you, your loved ones, whether it’s overt red flags or those silent cries for help,” Lohrke commented.

[Featured Image: Karina and Madison Clark/YouCaring]