The Jackson County Prosecutor's Office has charged a Lee's Summit man in the fatal shooting Wednesday morning of his older brother.

Lawrence Barr, 24, has been charged with first-degree involuntary manslaughter and armed criminal action after he claims accidentally shot his brother, identified as 28-year-old Aaron Elmore, at their residence at the 800 block of Northeast Magellan Avenue.

According to court documents, Barr had gone to mailbox with his .45 caliber handgun in his waistband, and when he returned to the house he was standing outside the doorway to the bathroom, where Elmore and Elmore's 2-year-old son were brushing their teeth. Barr said he was playing with the gun and didn't realize there was a round in the chamber when the gun fired once, striking Elmore in the back of the head.

Barr and Elmore's mother, who was in a nearby bedroom, heard the gunshot, saw her grandson running and screaming out of the bathroom, then saw Elmore slumped over in the bathroom. She asked Barr, who has pacing in his bedroom, “What did you do?” and Barr said it was an accident, according to court documents. Barr then left the residence and threw his gun out the window as he drove down a highway. He was not able to provide a specific location where he discarded the gun, nor did he tell police the gun's brand. The shooting happened shortly before 9:40 a.m. Wednesday.

Police said Wednesday that while they began their work at the shooting scene and their search for Barr, Barr voluntarily returned to the scene and surrendered without incident.

Prosecutors requested a bond of $100,000.