Twenty seven people, including senior Congress leaders and security personnel, were killed in the attack yesterday.
"Prime Minister Manmohan Singh and UPA Chairperson Sonia Gandhi will pay tribute to the deceased here at Congress Bhawan and later they will leave for Jagdalpur to meet those injured in the incident," a senior party leader told PTI.
Congress Vice President Rahul Gandhi today met state Congress chief Nand Kumar Patel's family members here at Devendra Nagar and expressed his condolence over the demise of the senior party leader.