BERN, Switzerland - Swiss police say they have uncovered a child pornography ring involving more than 2,000 people in 78 countries.

Federal Police spokeswoman Eva Zwahlen says authorities were monitoring a Web site with a provider in the Swiss canton Vaud, acting on a tip from Interpol.

She says the site was devoted to hip-hop music. But unknown individuals used a forum on the site to hide illegal child pornography films.

Zwahlen confirmed a Swiss newspaper report that the investigation involves people from the U.S., Poland, Greece and other countries.

Weekly SonntagsZeitung reported Sunday that 32 men are under suspicion in Switzerland.