Tirupati, Oct 15: An estimated 4.5 lakh devotees witnessed the nine day 'Brahmotsavam' festival, which concluded today at the hill shrine of Lord Venkateswara at Tirumala here, temple sources said. The total collection to the temple during the festival, which commenced on October 7, was about Rs 6.5 crore, besides gold and silver offerings, the sources said. Bureau Report