A 9-year-old boy has been arrested by the Police for allegedly stabbing his 5-year-old sister.

According to the Police, the boy repeatedly stabbed his sister just because she would not allow him to go outside to play, after their mother left them for just 10 minutes to pick up the mail.

The shocking incident is reportedly to have occurred in Ocala, Florida, USA.

According to reports, when the mother returned after 10 minutes, she said she witnessed her son stabbing his 5-year-old sister in the back, shouting, “Die, die.”

Shortly before 5 p.m. on Monday, the Ocala Police Department shared an update on Facebook, saying the boy was in custody as the girl was taken to a nearby hospital.

According to the affidavit, the mother grabbed the large kitchen knife from her son, who then ran outside as she checked on her daughter and called 911. The boy was found near the apartment complex, hiding in a maintenance shed.

The Associated Press reported that the girl was “alert and responsive” when she was air-lifted to the hospital.

“It was just a really disturbing scene,” an Ocala Police spokesperson told WOFL.

According to the affidavit, the boy is charged with attempted first-degree murder, and allegedly told detectives that he stabbed his sister because he “wanted to be able to go outside” — and that he first got the idea of killing her two days before the incident.

“This is a heartbreaking case. The Ocala Police Department wishes for the speedy recovery of the victim and appropriate action from the state for the suspect; whether that be detention or assistance, the end goal is for both of these children to be able to return to normal functioning lives within the community.” Ocala Police spokesperson Corie Byrd said in a statement.

On Tuesday, a judge ordered that the boy receive a psychiatric evaluation, according to WOFL, and his next court appearance is on Wednesday, Feb. 5.