HILLSBORO, Ore. -- Ten people were arrested Saturday in the largest piracy sting in Oregon history, authorities said.

The sting occurred Saturday afternoon at two different flea markets in Hillsboro.

Police said 15,000 DVDs and 30,000 CDs were confiscated during the raids at The Millennium and at The M and M Swap Meet.

In all, the fakes are worth more than $750,000, according to police.

Beaverton police officers said they started the investigation after a tip six months ago.

More than 20 investigators from the movie and music industry flew up from California for the raid.

Representatives from the movie and recording industry said pirating is costing them millions of dollars, because they don't see any of the money from the fake recordings.

"We have gone into a survival mode to maintain our ability to function as we have in the past," said Marcus Cohen, of the Recording Industry Association of America.