It has emerged that Senate President Bukola Saraki has queried his Chief of Staff, Dr. Hakeem Baba-Ahmed, over his “brazen involvement” in the summit held at the weekend by northern leaders, where about 18 northern groups, including the Arewa Consultative Forum (ACF) and the Northern Elders’ Forum (NEF), condemned the current leadership of the country, pointing out that his chief of staff acted without his knowledge and clearance.