 President Muhammadu Buhari wrote a written declaration on May 9, 2017 to the president of the senate and house of representatives on his decision to embark on a medical trip, the letter was read on the 9 May 2017 at plenary of both houses, senate and house of representatives respectively.Vice president, Professor Yemi Osinbajo was conferred the acting president during president Buhari's medical leave".On 7 August 2018, Osinbajo fired the State Security Service boss, Lawal Daura for illegal invasion of National Assembly by armed and masked operatives of the department.