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The unnamed migrant, 37, allegedly violently attacked the girl in Hamburg on November 2016, but fled the country before being detained in Hungary. Hungarian authorities identified the man, who had used a string of different names and dates of birth, by his fingerprints after he tried to gain access to a holding camp in southern Hungary. When authorities took his fingerprints they realised a European Arrest Warrant had been issued under one of his aliases.

GETTY There have been a number of incidents of migrants carrying out sex attacks in Germany

If the Iraqi man is found guilty of raping the 13-year-old girl it would contribute towards the growing clamour of German citizens who are angry at Angela Merkel for implementing the infamous open door policy towards refugees and asylum seekers. Aside from the sex attacks carried out in Cologne on the New Year’s Eve before last, a host of migrant-related sex attacks have been reported to German police.

GETTY Hungary is constructing a border fence in a bid to stem the flow of migrants

One alleged incident took place in the Aquapark in the city of Oberhausen in North Rhine-Westphalia, where two girls aged 13 and 15 were allegedly sexually assaulted in a swimming pool by two Afghan men aged 20 and 22. Another alleged attack took place in Bad Oldesloe, in the northern German state of Schleswig-Holstein, whereby two men aged 23 and 24 allegedly assaulted five underage girls after grabbing them in the water and sexually assaulting them.

Hungary, which has deported the Iraqi migrant reportedly involved in the Hamburg railway attack, has taken an extremely hardline approach to refugees. It is attempting to erect an electric fence along its 110 mile border with Serbia.

Cologne: Sex Attacks and Robberies Tue, January 12, 2016 Thirty-one suspects, including 18 asylum seekers, are under investigation over offences including sexual assault and theft in Cologne on New Year's Eve. Far right protestors in Lepzig have rallied against refugees and German chancellor Angela Merkel. Play slideshow Reuters•Getty 1 of 22 Protestors in Lepzig rally after over 100 women were sexually assualted on New Year's Eve