Ah, well I will take the time to fill in this information, being a native Bulgar.
1) There are multiple very strong mafias in Bulgaria. They like to shoot each other, and often like to overtake cars in the oncoming lane. They rarely make it though, cuz in BG, we have a higher "casualty" rate from driving accidents than you guys in the US are losing soldiers in Iraq. No joke - fact.
2) The government is, at times, cleaning up the mafia by emplying the secret service. Again, no joke. That's why only "key" members seem to die.
3) Oh yeah, all of the mafia specialize in weapons smuggling from Turkey. They then resell the stuff. We're talking about submachine guns and pistols primarily here. Some grenades too.