Man found guilty in stabbing over cigarette smoke

A jury found an Atlanta man guilty of voluntary manslaughter and aggravated assault after he stabbed another man over cigarette smoke, according to the Fulton County District Attorney’s Office.

Dontavis Montgomery, 21, was convicted in the January 14 incident. The District Attorney's Office says that Montgomery stabbed 26-year-old Nicholas Roberts during a fight after Roberts had warned Montgomery's half-brother, Quintavius Hammonds, not to smoke.

Hammonds started smoking a cigarette in Robert's apartment, and a fight ensued, according to officials. During the fight, Montgomery grabbed a knife from the kitchen and stabbed Roberts in the back, according to police.

The stab wound extended four inches, puncturing Roberts’ lung. Then, the brothers fled the scene.

Montgomery turned himself in six days after being identified by police, and claimed that he stabbed the victim in defense of others, according to authorities.

Montgomery was sentenced to 20 years in prison.