13-Year-Old Sister Left in Charge, Arrested for Stabbing Her 7-Year-Old Sister to Death Over "Flushing the Toilet".

A family in Taylor, Michigan is dealing with incredible loss after one of their children has been murdered and another is the accused.

On this past Saturday a 13-year-old girl who was in charge of babysitting her younger sister reportedly stabbed her younger sister to death with two different knives. Afterwards, police say, the girl showed no remorse.

"She was very calm and just showed no emotion," said Taylor Detective Cpl. Zachary Digiacomo.

Authorities have not released the identity of either sister. 

The girls' parents left them alone at home around 11:15 a.m. The 13-year-old was babysitting the 7-year-old when the argument broke out. 

"It stemmed from a note that was placed in the bathroom and the note was about flushing the toilet," Digiacomo said.

After the argument, the 13-year-old allegedly waited until her sister was in the bathroom again to stab her several times using two knives – a butcher knife and a hunting knife, according to police.

The older sister first called her father and then 911, telling them that she had stabbed her sibling.

Upon arrival, police located the victim in the bathroom with "over 10 stab wounds ranging from the abdomen, to the head, to the neck," Digiacomo said. "All I can say is, it's shocking, and it's very tragic."

The 7-year-old was rushed to a local hospital where she was pronounced dead. 

At this time , the teen will not be charged as an adult. Prosecutor Kym Worthy said, per the release, “We considered adult designating her which is not the same thing as trying her as an adult. It gives the judge the option of sentencing the respondent as a juvenile, or as an adult, or giving a blended juvenile sentence with an option of imposing an adult sentence if the juvenile is not rehabilitated." 

"Our other option was to keep her in the juvenile system. We opted to do just that. Given her young age, the State would have seven years to diagnose, treat, and rehabilitate her until her mandatory release at age 21. Hopefully then she would not be a danger to others. While this is a difficult decision given these facts, it is the right thing to do in this case," Worthy added.

The teen is charged with first-degree murder, felony murder and first-degree child abuse, the Wayne County Prosecutor’s Office announced.