Reporters Without Borders condemned the arrests and disappearances yesterday of bloggers and online activists across a number of Tunisian cities. The worldwide press freedom organization has monitored at least five such cases but the list could well be longer. Police arrested the bloggers to question them about hacking into government websites by the militant group Anonymous, several sources told the organisation. Reporters Without Borders urged the authorities to release them as soon as possible. “These arrests, intended to intimidate Tunisian Internet-users and their international backers, are likely to prove counter-productive, by stoking up tension. Arresting several bloggers is not the way to get images of demonstrations deleted from the web or for cyber-attacks to be halted”, Reporters Without Borders said. “Stepping up the repression is absolutely not a solution to the crisis engulfing Tunisia today”. Four or five police plainclothes officers arrested the blogger and activist http://www.facebook.com/Kaloutcha.Hamadi ) at his home at around 6am, seizing a computer and a central processing unit. They told his wife they were taking him to the nearest police station and “just have a few questions for him”, and “that will only take a few hours”. There has been no news of him since. Cyberdissident, a student activist, was arrested by police in Bizerte (north of Tunis) and his computer seized. Tunisian rapper– real name Hamada Ben Aoun – was also reportedly arrested in Sfax, about 270kms southeast of Tunis. In his song, “President, your people are dead”, he challenged President Ben Ali over corruption and unemployment. His video is hugely popular among young Tunisians and widely circulated online. (See the video on: http://www.facebook.com/video/video.php?v=129701343760262&oid=153793954645919&comments ). Further, there has been no news ofand, two netizens based in Tunis. Slim Amamou ( http://twitter.com/#!/slim404 ) was briefly detained on 21 May 2010 just ahead of a demonstration against web censorship which he planned to hold outside the information ministry in the capital. Several human rights activists, who asked for anonymity, said he is being held at the interior ministry. Azyz Amamy apparently covered clashes a few weeks ago in Sidi Bouzid. His blog is currently inaccessible ( http://azyz404.blogspot.com/ ), and his Facebook page has been deactivated. These arrests come as the authorities attempt to shore up censorship of the web to try to stifle political and social protest movements which are raging in the country at the moment and to end cyber-attacks against government websites. Social networking sites have given unprecedented coverage to these events, while the traditional media, most of which are under the control of the regime, have stayed silent. See the previous release . The regime is tightening censorship of online articles on international media about the current unrest. Meanwhile,, a journalist with the international service of the daily Le Monde, a specialist on the Maghreb, was today refused entry to Tunisia. The daily has been banned in Tunisia since its special correspondentwas expelled in October 2009. Meanwhile, Ammar Amroussia, who covered the recent events in Sidi Bouzid for the banned newspaper Al-Badil ( http://www.albadil.org/ ) and participated in many solidarity protests in Gafsa (400 km south of the capital), condemning corruption and urging his compatriots to combat the “dictatorship,” was arrested on 29 December and is being held in Gafsa prison. He is facing the possibility of more than 12 years in prison on a range of charges under articles 42, 44 and 49 of the press code, articles 121, 131, 132, 220-b, 315 and 316 of the criminal code and article 26 of a 1969 law about the “organization of public meetings, processions, exhibitions, demonstrations and gatherings.”