In Belgium there is a federal police computer crime unit. You can report (even on line) any computer or internet related crime. They also provide a step by step action plan for a number of crimes ranging from child porn over phising to ransomeware you can download and read.
http://www.polfed-fedpol.be/crim/crim_fccu_nl.php (flemish)
http://www.polfed-fedpol.be/crim/crim_fccu_fr.php (french)
Sorry, English is no official language in Belgium.