Elaborate security arrangements have been made here in view of the visits of President Pranab Mukherjee and Vice-President Hamid Ansari. Mukherjee will arrive on June 11 for a four day holiday with no important official engagement and stay at the Retreat in Mashobra, the summer residence of the President, 15 km from the state capital. The President would attend a dinner hosted by the Governor Kalyan Singh at Raj Bhawan on June 12, official sources said.