A 6-year-old boy was stabbed to death on early Monday morning after a man allegedly broke into his family’s Versailles, Kentucky, home and attacked him while he was sleeping, PEOPLE confirms.

Ronald Exantus, 32, is charged with murder and burglary for allegedly killing kindergartner Logan Tipton as he slept. He is being held at the Woodford County Detention Center on $1 million bail.

Get push notifications with news, features and more.

According to an arrest report obtained by WKYT, Exantus broke into the home, grabbed a “large kitchen knife,” and then walked upstairs to the Logan’s bedroom, where he stabbed the boy multiple times in the head.

Four other children were sleeping in the room at the time of the attack, the report said. Logan’s 11-year-old sister allegedly woke up to the sound of the struggle and threw herself on Exantus to keep him from stabbing anyone else. She then screamed for help.

Logan’s father rushed into the room and allegedly detained Exantus until police arrived at the scene. The family told authorities that they did not know Exantus, who lives in Indianapolis, nearly 200 miles north of Versailles.

• Want to keep up with the latest crime coverage? Click here to get breaking crime news, ongoing trial coverage and details of intriguing unsolved cases in the True Crime Newsletter.

In an interview with investigators, Exantus allegedly confessed to stabbing the boy. Police have not offered a motive for the attack, but a public defender who’s been assigned to represent Exantus said that she believes “he’s mentally ill,” according to WKYT.

“I have discussed various things with him on two separate occasions this morning and he’s not able to really discuss anything; he’s not here,” attorney Bridget Hofler told reporters following Exantus’ arraignment on Monday, according to The Indianapolis Star.

The police report states that it is “unknown” whether Exantus was under the influence of drugs or alcohol. He has no previous criminal history.

The seemingly random attack has left neighbors shaken. “It’s just a horrible thing, makes you wonder why this would happen to this little boy. It’s just so sad,” said neighbor Tiffany Crow.