Ekweremadu, on his Twitter handle, @iamekweremadu, expressed deep sadness and heartfelt condolences to Kyari’s immediate family, President Buhari and the entire Presidency.

He also prayed to God to grant the soul of the deceased eternal repose.

“I am deeply saddened by the news of the passing on of the Chief of Staff to President Muhammadu Buhari, Mallam Abba Kyari.

“It is a heavy loss to the Presidency and the nation to which he gave his all.

“My heartfelt condolences go to his family, the Presidency and the entire nation.

“May his soul rest in peace,’’ Ekweremadu prayed.