LIMA, Peru - Members of the hacker group Anonymous are claiming responsibility for cyberattacks that overwhelmed the websites of Peru's presidency and judiciary.

The activists say on Facebook that they launched Friday's denial-of-service attacks to protest the "ineptitude and corruption" of Peruvian authorities.

Such attacks flood websites with data, typically using Internet-connected "zombie" computers hijacked with Trojan Horse programs.

The chief of Peru's police cybercrime unit confirms the attacks, which knocked the sites offline for at least six hours. Oscar Gonzales says the sites' owners did not report the outages to police.

Spokesmen for the presidency and judiciary have declined to confirm their sites were under attack.