Contact between NCB Beirut and the other NCBs is made either directly or through the IPSG, in many fields like :

- Exchanging all kinds of criminal information.
- Arresting and handing over criminals according to the agreements concluded between
   countries or according to the principle of reciprocity.
- Carrying out the international rogatory letters.
- Exchanging expertise in the different fields of work.

All this is achieved in the context of enforcing the regulations of the Organisation, the international agreements concluded between it and the other international organisations and bodies, and the bilateral and multilateral agreements among all the countries in accordance with the laws and regulations adopted in each of them.