Younger Brother Accidentally Kills Addicted Sibling with Pen Gun

The younger brother, overwhelmed by his elder sibling’s drug addiction and violent tendencies — which included beating family members, smashing possessions, and even kicking their mother until she fell from a platform — had recently taken the family cow hostage, demanding a ransom to buy more drugs. According to the report dated September 29, 2026, the younger brother said he could no longer tolerate the abuse. He seized the cow, hid it, and demanded money from his brother to purchase narcotics. When he went to retrieve the cow, his brother confronted him, attempting to attack him. In panic, the younger brother grabbed a pen‑style firearm from the house, intending only to fire a warning shot, but the weapon discharged, hitting his brother in the head and killing him.

The incident took place in the evening of September 28 at a home in Nong Kai Nok, Muang Sam Sip, Ubon Ratchathani. Officers from Muang Sam Sip Police Station, led by Deputy Inspector Suraphol Surarat and Police Colonel Kongrit Darach, arrived with investigative teams, doctors from Muang Sam Sip Hospital, forensic police, and the Jeetumgoh rescue unit. They found the victim, 35‑year‑old Prasert (surname withheld), lying supine, shirtless, wearing black trousers, with a single .22‑caliber gunshot wound to the right side of his skull. The shooter, identified as 31‑year‑old Chatree, the victim’s younger brother, left the scene and waited at a relative’s house about 100 meters away before turning himself in.

During questioning, Chatree admitted he had taken out the pen gun merely to threaten his brother, but it accidentally fired, striking him in the head. He said he then threw the weapon into a pond out of shock. He explained that his brother’s drug‑induced aggression had made co‑habitation impossible; the brother had repeatedly assaulted him, stolen his belongings — including two motorcycles — sold them to buy drugs, and destroyed or burned whatever he could not take. On the day of the shooting, the brother had secretly taken Chatree’s cow, which was tethered in a field, and hidden it to extort money. Chatree said he searched for the cow, found it, and was leading the calf back to its pen when his brother emerged, blocked his path, and tried to attack him. He ran inside to get the pen gun, planning only to fire a warning shot, but it went off and hit his brother in the head. He insisted he had no intention to kill, asking for forgiveness and expressing deep regret.

Their 61‑year‑old mother said Prasert suffered from a psychiatric condition requiring medication at a mental health hospital, which made him prone to violent outbursts; even she had been assaulted and had to stay with relatives. Authorities initially sent the body to the hospital and charged Chatree with intentional homicide and violations of the Firearms Act, pending further legal proceedings.