Getty Images Migrants from Syria have been arrested after three more sex attacks were reported to police

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Police said they have detained migrants in three more cases - one of which was traced to an asylum centre. It comes as legal programmes have been launched for migrants, addressing areas of sexual equality and freedom of speech. The classes, launched in Bavaria, are voluntary, and officials say they were planned before widespread assaults on women were revealed. Tensions in the country are at breaking point as protests and counter-protests over the New Year’s Eve attacks in Cologne spark riots. Yesterday, a masked group of 200 barricaded buildings and smashed shop windows as they demanded action from authorities in the city of Leipzig. And vigilante groups have attacked foreign migrants as 'revenge' for the sex assaults. Three teenagers aged 15 from Syria have been arrested for rape after a 17-year-old girl was attacked in a public swimming pool in Munich on Saturday.

The trio allegedly surrounded the teen, with one of the boys groping her under her swimming costume and penetrating her, making the sex attack rape under German law. The girl's sister was also allegedly groped before they managed to flee to a lifeguard who called the police. Because the asylum seekers were only 15, they were not remanded in custody and were released, and will be prosecuted under juvenile law. Officers have also made an arrest for rape and attempted murder after a 24-year-old woman was attacked on Christmas Eve. The alleged attacker, aged 20 from Morocco, was traced to an asylum seeker centre. During the attack outside a cemetery in Gelsenkirchen the woman was approached from behind and beaten unconscious before being dragged into a cemetery and raped.

Getty Images Police have separated rival demonstrators in Germany

Violence against women is always despicable and criminal, and it is a great shame that this has been shown to be a case where the alleged attacker is from the ranks of the asylum seekers, who only a short time before were welcomed into our community here Mayor Frank Baranowski

Local mayor Frank Baranowski said: "Violence against women is always despicable and criminal, and it is a great shame that this has been shown to be a case where the alleged attacker is from the ranks of the asylum seekers, who only a short time before were welcomed into our community here in Gelsenkirchen. “This is not only a gross disregard for hospitality but also inhumane. "This person will not only face the consequences of his actions if convicted, but also he has done severe damage to all those others who have fled their homes and will now be tainted because of what he has done." Police said the man arrested was apparently a member of the "Casablanca" band, identified as a group of thousands of North Africans who have been committing crimes in North Rhine-Westphalia to an enormous degree in the last six months particularly. He will also face attempted murder charges because the injuries the woman received were so severe that she almost died.

Getty Images Protestors have taken to the streets of Germany after the sex attacks in Cologne

Another attack on a 15-year-old girl was reported by police, involving an unregistered asylum seeker who had been given accommodation in Burghausen. A police spokesman said that the schoolgirl was on her way home when a heavily intoxicated Afghan teenager asked if he could kiss her. When she refused and tried to get away, he grabbed her hand and tried to kiss that. She managed to break free but he then chased and grabbed her with both hands. She was reportedly assaulted and a 26-year-old local managed to intervene and chase him off. The alleged assailant was arrested a short while later.

Getty Images Girls as young as 15 have reported being sexually assaulted