(AP) -- A hackers group has claimed responsibility for a denial-of-service attack on the official Formula One website in protest over the running of this weekend's Bahrain Grand Prix.
The hacking collective Anonymous also attacked F1-racers.net, where it posted a message saying the "Formula 1 racing authority was well-aware of the Human Rights situation in Bahrain and still chose to contribute to the regime's oppression of civilians and will be punished."
The Bahrain Grand Prix is going ahead despite violent clashes between riot police and demonstrators who believe the race should not be held until the government ends its rights abuses and enacts concrete reforms that benefit the Shiite majority.
Formula1.com was unavailable to many users for some of the day Friday. Denial-of-service attacks work by overwhelming a website with bogus traffic.
Explore further: Rubio: US should give airwaves to cell companies