In Indiana, a 16-month-old boy was shot and killed by his 5-year-old brother, according to Lafayette police.

Authorities said a 16-month-old boy was fatally shot by his 5-year-old sibling in a northwestern Indiana apartment.

According to police, the older sibling accessed a handgun inside the Lafayette apartment on Tuesday afternoon and fatally shot the boy, identified as Isiah Johnson.

Lafayette police Lt. Matt Gard said that after the shooting, someone outside the apartment called 911 to report that a child was not breathing.

“Inside the apartment, there was one adult and two children,” Gard told the Journal & Courier.

An autopsy was scheduled for Wednesday to determine the cause and manner of death of the child.

As of Wednesday morning, no arrests had been made, and the case was still under investigation, according to police.

When the investigation is finished, the case will be sent to the Tippecanoe County Prosecutor’s Office for review to see if charges should be filed.

Lafayette is approximately 60 miles north of Indianapolis.