The Economic and Financial Crimes Commission, EFCC, has begun a secret probe into the corruption allegations brought against Speaker of the House of Representatives, Yakubu Dogara, by Abdulmumin Jibrin.

The Cable, an online newspaper, reported that as part of the investigation, the EFCC has been inviting finance directors of federal ministries and agencies to come with the details of their draft budgets and what was finally approved by the national assembly.

The report said the directors have been appearing before the anti-graft agency on different days of the week.

Recall that Jibrin, a former chairman of the House of Reps. Committee on Appropriation, had alleged that Speaker Dogara and three other principal officers of the House had made  illegal insertions into the 2016 budget to the tune of about N450 billion.

The three principal officers include, Deputy Speaker, Yusuf Lasun, House Whip, Alhassan Doguwa and Minority leader, Leo Ogor.

Jibrin alleged that twelve other lawmakers were also involved in the budget-padding corruption.

The Kano State lawmaker also wrote petitions to the EFCC, the Indepndent Corrupt Practices and other related offences Commission, ICPC, the Department of State Service, DSS and the Nigerian Police force, calling for the investigation of the Speaker and his cohorts.

Speaker Dogara, however, has denied any wrongdoing in his handling of the 2016 budget.

He said Jibrin was only aggrieved that he was removed as chairman of the appropriations committee.

But Jibrin insists that Dogara must stand down as Speaker of the House in order to give room for full investigation into the allegations.

The leadership of the All Progressives Congress, APC, the party that produced both Speaker Dogara and Jibrin, had intervened in the matter, at some point ordering both parties to quit making public comments about the case as it portrayed the party in bad light.

The directive, however, did little to deter Jibrin who insists that Dogara must go to jail.

On Wednesday, Jibrin had a three-hour meeting with the Itse Sagay-headed presidential advisory committee on anti-corruption.