i found this article on crime in managua its from 2006 wich means its recent facts that need to be used for this section

i didnt copyright i changed alot of thw phrases
Managua the Epicenter of crime in Nicaragua Managua experienced a rise in violence and crime throughout 1990's. Violent crime in Managua is for various reasons such as political violence, Civil war crime and delinquency.

Gangs in Managua are a widespread phenomenon that is growing fast. Currently managua has more than 110 gangs with more than 8,000 members. These gangsare responsible for 50% of all crimes in Nicaragua and 60% of all crimes in Managua. violence and gang warfare is prevalent.These gangs are responsible for theft, mugging, pick-pocketing they also have involvement in the drug trade among other criminal activities.[2]

and this is the original one
Managua, Nicaragua 
epicenter of crime in Nicaragua

experienced rising levels of violence and criminality throughout 1990s 

40% of all crimes in Nicaragua committed in Managua – half of these reported crimes considered violent

nature of violence and violent crime shifts from political violence and civil war to crime and delinquency 
Pandillas – youth gangs – in Managua

now a prevalent and widespread phenomenon – growing rapidly

currently more than 110 pandillas with approximately 8,000 members  
concentrated in lower-class barrios – poverty and lack of opportunity drive membership  
territorially based in specific neighbourhoods 
defend territory as a source of identity and pride 
 
Lower class barrio in Managua 
Pandillas commit variety of crime, often employing firearms

responsible for disproportionate share of criminal activity

commit 50% of all crimes in Nicaragua and 60% of all crimes in Managua  
violence and gang warfare prevalent

robbery, mugging, pick-pocketing and involvement in
drug trade among other criminal activities
and here is the link
http://www.rcmp-grc.gc.ca/focus/youth_gun/managua9_e.htm