But a spokesman for Vice President Yemi Osinbajo said in a statement that the DSS director general, Lawal Musa Daura, had been fired.
The security operatives also blocked the lawmakers and NASS workers from gaining access to the offices but later allowed the lawmakers go in.
Seiyefa, who hails from Bayelsa State, was before his new appointment the most senior director in the DSS.
Longtime Manafort deputy Rick Gates admits embezzlement
According to multiple news outlets , Gates was asked on Monday if he was involved in criminal activity when working with Manafort. Gates testified that he and Manafort had 15 foreign accounts they did not report to the US government, and knew that was illegal.
Daura, who was appointed to the post by President Muhammadu Buhari in 2015, was axed over the invasion of the National Assembly Tuesday morning by masked officials of the SSS, an incident the presidency said was not authorised.
Said: "The Nigeria Police Force wishes to categorically state that its personnel was not involved in any way whatsoever in the blockade of the National Assembly in the early hours of today, 7th August, 2018".
The meetings took place separately at Professor Osinbajo's office.
China ready with additional tariffs
That move was a response to the Trump administration's proposal of a 25-percent tariff on $200 billion worth of Chinese imports . At minimum, we will make much better Trade Deals for our country!,' he added.
The Federal Government has named the most senior director in the Department of State Service (DSS), Matthew Seiyefa, as the acting Director-General of the service.
Lawmakers loyal to Buhari's All Progressives Congress (APC) are believed to be planning to oust the president of the Senate, Bukola Saraki.
Seiyefa enlisted into the Nigerian Security Organization (NSO) in 1984 after completing his National Youth Service Corps (NYSC) programme at the School of Islamic and Legal Studies (SILS) Kano. Saraki had called a meeting of parliamentary leaders to hold on Tuesday amid pressures on the lawmakers to approve funding for next year's election.
2018 primary election: Check back for results from statewide and local races
Pollsters rate the OH race between Republican State Senator Troy Balderson and Democratic lawyer Danny O'Connor, 31, as a toss-up. A tight race in today's special congressional election in OH could signal trouble for Republicans in the midterm elections.
Seiyefa arrived at the presidential villa in Abuja around 4pm on Tuesday.