What is the number for international police reports?

Ideally, reports of crimes should be made directly to the police agency having jurisdiction where the crime took place. If you were the victim of a theft in London, you would report to the Metropolitan Police; if you were assaulted in Paris, to the Paris gendarmes. If the crime is discovered after you have left that country, you can call or write a letter to the appropriate police agency and report the crime. In some cases, they will direct you to go to your local police department to take a "courtesy report," which will then be forwarded to the appropriate police agency.

There is no special clearing house for international crimes. Interpol is not a police agency, but rather an association of agencies in member countries. Interpol serves as the communications medium between these countries.