Abati has been cooperating with EFCC investigators, sources at the anti-graft agency have told Pulse.
Abati was picked up by EFCC personnel on Monday, October 24, 2016.
There are reports that he will be kept indefinitely by the anti-graft agency pending conclusion of interrogation.
The former Presidency spokesperson has been accused of receiving the sum of N50M from erstwhile National Security Adviser (NSA), Sambo Dasuki.
ALSO READ: Reuben Abati reportedly got N50M from Dasuki
Dasuki is in custody of federal law enforcement authorities after allegedly misappropriating over $2.2B earmarked for equipping the military.
“Abati has admitted to receiving N50M from Dasuki”, an EFCC source told Pulse.
“He has also told us that the money was used to run his office. But we aren’t done with him just yet and we aren’t satisfied with some of his explanations regarding how the money was spent. Details have been rather sketchy from him”, offered the EFCC source.
Through its social media pages, EFCC said Abati “is presently telling operatives of the Commission his role in the alleged mismanagement of the nation's resources through his office. We shall keep you posted”.
Abati joins Musiliu Obanikoro and Femi Fani-Kayode--two other men who worked with Jonathan--in EFCC detention facility. The trio was arrested recently.
EFCC sources have also told Pulse that Obanikoro and Fani-Kayode will be arraigned soon.