A man who climbed under the roof of the Dortmund stadium during Germany’s European Championship round of 16 match on Saturday wearing a mask and carrying a large rucksack only wanted to take photographs, police have said. A video, published by the website of English newspaper the Daily Mail, shows the man being arrested by police at gunpoint after the match against Denmark. Officers announced that the man was from the German city of Osnabrück, around 120 kilometres north of Dortmund. “According to initial findings, the 21-year-old wanted to take photos on the roof of the stadium, as he had alr…