A spokesman for Vice President Yemi Osinbajo said in comments on Twitter that DSS head Lawal Musa Daura had been fired.
He left the State House about 45 minutes after he came in.
The presidency in a statement said the obstruction of lawmakers was without its consent. He declined to speak to newsmen.
"Mr. Daura has been directed to hand over to the most senior officer of the State Security Service until further notice", Akande said.
Seiyefa is also a member of the National Institute.
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While the reason for his termination has not been made public, early speculations indicate that it might have something to do with DSS operatives taking over the National Assembly complex early on Tuesday.
The party insisted that the invasion by the DSS and Police was with the absolute knowledge and approval of President Muhammadu Buhari, Osinbajo, and the All Progressives Congress (APC), adding that Daura's sack was an afterthought, diversionary and deceitful. So, when I get the brief, in fact we are going to issue a (press) release.
Some DSS operatives had blocked the National Assembly gate Tuesday morning.
Acting leader Yemi Osinbajo sacks head of the state security agency Lawal Musa Daura hours after masked security agents barred lawmakers from entering the parliament in capital Abuja.