A vendetta between two Thessaloniki security firms culminated in the arrest of one of the companies’ bosses yesterday on suspicion of having fired several gunshots at the rival firm’s office, together with some of his employees. The 40-year-old was arrested shortly after a 5 a.m. attack, in which at least five shots were fired, smashing the windows of the Astir security company in a city suburb. Nobody was injured. The suspect, whose name has not been released, had a loaded revolver, five bullets and a wooden baseball bat in his possession, police said. A nightclub security job both companies were competing for was awarded to Astir. This led to fighting between employees from the two companies outside the club early yesterday morning. Gunshots were exchanged and three people were hospitalized after being badly beaten. The Astir headquarters were shot at directly afterward.