At the national level, statistics show a negative relationship between violence, using as an indicator the homicide rate, the presence of armed groups, and various performance indicators for the criminal justice system. In the last two decades, the Colombian homicide rate has more than quadrupled. In a parallel fashion, the influence of the principle armed organizations - the guerrilla, the drag mafia (or narco-traffickers), and paramilitary groups - has increased [Thoumi 1994]. During the same period, the capacity of the justice system to investigate homicides has been considerably reduced. The proportion of homicide cases that reach the courts, which in the 1960s was above 35 percent, today is less than 6 percent. In 1975, for every 100 homicides, more than 60 suspects were captured; in 1994, this figure had been reduced to 20. Conviction rates, which in the 1960s reached 11 percent of the total number of homicides committed, have dropped to barely 4 percent today [Ruhio 1996a].