article_snippet: On Sunday afternoon it was still unclear how a man gained access.
article_snippet: a man was seen calmly walking around on the roof of the building before being arrested by police.
article_snippet: It remains unclear how a man got there .
article_snippet: Tourists  stopped to look up at a man as a man wandered around the roof of the building.
article_snippet: the man who was later arrested unharmed is not believed to have given a reason for why the man who was later arrested unharmed scaled the building or how the man who was later arrested unharmed got there.
article_snippet: Tourists stopped to observe the unfolding situation last night, with many pondering how the man who was later arrested unharmed was able to gain access to the building.
article_snippet: One witness told the Daily Telegraph: 'the man who was later arrested unharmed's just walking up and down, looking a bit vacant.' '
article_snippet: a man appeared calm but described as 'vacant' by onlooking tourists who questioned how a man got up onto the roof of the building .