The incident happened on Sunday evening in the city of Eisenstadt in Burgenland in eastern Austria when one of the brothers - an 18-year-old - leaned out of the passenger seat and fired a blank-firing gun.
According to police it was in the direction of two asylum seekers from Iraq, aged between 20 and 25-years-old, who happened to be walking past at that moment. Neither of them were hurt in the incident.
After the teenager was tracked down by police, he told investigators that he had not wanted to hurt or threaten anyone - including the asylum seekers - and had simply been trying out the gun.
His 25-year-old brother, who had been driving the car, said he had no idea of his younger brother's intentions. Police have reported both brothers to prosecutors, who will decide whether they will face charges.
Weapons and Nazi materials found in Vienna
Meanwhile in a separate incident in Vienna, a man was arrested after firing several shots with a gas blank-firing pistol out of a window in the district of Döbling.
After police were called to the scene and entered his apartment, they found numerous Nazi-related materials and illegal weapons.
Photo: LPD Wien
Items in his possession included close-combat knives and machetes, as well as a swastika medallion, an SS banner and a copy of Adolf Hitler's book ‘Mein Kampf'.
The 33-year-old man was arrested under the weapon and Nazi prohibition acts.