The Recording Industry Association of America (RIAA), together with federal law-enforcement officials, is investigating the hacking of its Web site over the weekend.

The Recording Industry Association of America (RIAA), together with federal law-enforcement officials, is investigating the hacking of its Web site over the weekend, Billboard Bulletin reports. The site, which was knocked out on Friday, will remain down for the "next day or two," according to a source familiar with the situation.

An RIAA spokesperson says the FBI and Secret Service are assisting in the investigation. "How pathetic that those who want free music don't believe in free speech," she says.

This is not the first time the RIAA site has been hacked. Last summer, the site was attacked the day after Rep. Howard Berman (D-Calif.) introduced legislation that would give copyright holders leeway to thwart infringement on peer-to-peer networks by using measures such as interdiction, file-blocking, and spoofing.

As previously reported, RIAA chairman/CEO Hilary Rosen last week announced she will step down from her posts at the end of the year.