A video of what seems to be officers in civilian clothes beating a naked minor has sparked outrage in Tunisia, two days after a man died after fleeing police custody. Authorities launched investigations Thursday into both incidents which took place in the Tunis district of Sidi Hassine. The district has been rocked by angry protests since Tuesday, when the man died after being arrested by police on suspicion of dealing drugs, according to local media. The Association of Young Tunisian Lawyers said in a statement that police had detained and handcuffed the man then beaten him, "leading directly to his death". Interior ministry spokesman Khaled Hayouni denied the allegations. He said the man had escaped when a group of young people attacked security forces, but had later died in hospital. Tunisian media said an investigation into the causes of his death was underway. On Thursday, a video went viral on social media showing a minor being beaten as he lay naked on a sidewalk, before being escorted by what appears to be policemen in civilian clothes and shoved into a van. The incident took place on Wednesday following clashes between police and mourners who had attended the funeral of the man who had died the previous day. The interior ministry said the minor was drunk and had taken off his clothes to provoke the police and was arrested him for "violating decency". The ministry said it had opened an enquiry into possible "abuses" and would "take the necessary measures based on the findings". Ten years since a revolution which overthrew the police state of dictator Zine El Abidine Ben Ali, Tunisia's security forces have yet to see meaningful reform. Officers very rarely face prosecution for alleged abuses. Tunisia's independent High Human Rights Commission said Thursday that incidents such as those in Sidi Hassine risked undermining "confidence in the state and its institutions". Parliament also released a statement urging authorities to provide the minor with "physical and legal protection" and to carry out a serious investigation into the "heinous" incident. The World Organisation Against Torture warned in a statement that "the investigation should be all the more prompt given that the video makes it possible to identify the aggressors and to affirm that it is indeed mistreatment without any justification". ayj/cnp/par/hkb