Hackers left data supposedly revealing the salaries of court employees, a link to a Bulgarian music video with homosexual content and the personal phone number of a man alleged to be a court official.

Hackers on Tuesday attacked the website of a Russian court that sentenced three members of punk band Pussy Riot to prison, and posted a song insulting President Vladimir Putin that plays automatically when users access the site.

The attack on the website of Moscow's Khamovichesky District Court halted its proper operation for some three hours.

Hackers left data supposedly revealing the salaries of court employees, a link to a Bulgarian music video with homosexual content and the personal phone number of a man alleged to be a court official.

The attackers claimed in a statement left on the site www.hamovnichesky.msk.sudrf.ru that they were members of the hackers group Anonymous and left the message: "We do not forget and we do not forgive."

The attackers also amended the site so that Pussy Riot's latest song "Putin Lights Up the Fires" played automatically when the site was accessed, the Interfax news agency reported.

Released over the weekend, the tune is a defiant punk call to arms

including the lyrics: "Putin is lighting the fires of revolution ... Putin is going to say goodbye like a sheep!"

The court website was functioning normally later in the day and all hacker-induced changes appeared to have been removed.

Three members of the band Pussy Riot were sentenced on Friday to two years in prison for singing the song "Mother of God Drive Putin Out!" inside a Russian Orthodox cathedral in Moscow.

The Khamovichesky court found Nadezhda Tolokonnikova, Maria Alekhina, and Ekaterina Samuzevich guilty of hooliganism and inciting religious hatred. Their lawyers have said they plan to appeal.

The verdict in the Pussy Riot trial has been widely criticized as excessive and repressive of free speech.

Two other members of the band are sought on the same charges, a police spokesman said on Monday.