New Delhi, Sep 21 (ANI): Yoga guru Baba Ramdev was detained and questioned at Heathrow Airport for over six hours on Friday by British customs officials. The reason for his detention at the airport is not clear yet. Ramdev___s Spokesperson S K Tijarawala stated that the yoga guru was harassed without any reason. Ramdev went to London to attend the function organized by the Patanjali Yogpeeth on the 120th anniversary of Swami Vivekananda in the next couple of days.