NGScorecard

US engineering firm KBR, a former Halliburton subsidiary, was found by US authorities to have paid roughly $180 million in bribes to Nigerian officials between 1994 and 2004 to win contracts for the Bonny Island liquefied natural gas project, one of the largest foreign bribery cases in history.

After years of limited domestic action, the EFCC filed charges in November 2010 against several former Nigerian officials allegedly linked to the scheme. The case proceeded slowly, and no Nigerian official had been convicted domestically by the end of Yar'Adua's term, even as the US and other jurisdictions had already fined the implicated foreign companies billions of dollars.

German engineering giant Siemens was found by German and US authorities to have paid an estimated $12.7 million in bribes to Nigerian government officials between 1999 and 2004 to secure telecommunications equipment contracts, part of a much larger global bribery scheme the company admitted to.

Siemens reached settlements with German and US regulators in 2008, paying record fines, but Nigeria's own domestic investigation into which officials received the bribes moved far more slowly, and no Nigerian official had faced prosecution or conviction over the funds by the end of Yar'Adua's term.

Former Delta State Governor James Ibori, a powerful figure within the ruling party and a Yar'Adua ally, was investigated by the EFCC under Nuhu Ribadu for allegedly embezzling several hundred million dollars in state funds during his 1999-2007 governorship, using shell companies and offshore accounts.

Domestic charges against Ibori were repeatedly dismissed or stalled by Nigerian courts on procedural grounds through 2009, and he was never convicted in Nigeria. He was arrested in Dubai in 2010 and ultimately convicted in the United Kingdom in 2012 on money laundering charges, well after leaving the jurisdiction his own country's courts had failed to hold him in.

The 2006 sale of a 51% stake in NITEL to the Transcorp consortium for a stated $500 million was alleged to have involved irregular process and inadequate upfront payment, with only a small deposit reportedly paid before Transcorp took operational control of the national carrier.

Yar'Adua's government revoked Transcorp's licence in 2009 citing its failure to meet payment and investment obligations, but pursued no fraud prosecution against those involved in structuring the original deal, and no funds were recovered beyond the licence revocation itself.

A National Assembly probe into the National Integrated Power Project found that an estimated $10-16 billion had been spent on power plants and associated infrastructure since 2005 with little corresponding increase in electricity delivered to consumers, raising allegations of inflated contracts and poor project oversight.

The probe's findings were widely publicised, but no comprehensive independent forensic audit of the full NIPP spending was completed, and no senior official was prosecuted over the findings before the end of Yar'Adua's own term.

Reports and internal reviews during the final years of the term raised early concerns that the fuel subsidy reimbursement scheme, which paid marketers the difference between import cost and the regulated pump price, was vulnerable to inflated import claims and inadequate verification of actual fuel delivered.

No major reform or independent audit of the subsidy verification process was undertaken before the end of the term, leaving the vulnerabilities in place. The scheme's weaknesses became fully apparent only a few years later, when a much larger fraud was uncovered under the succeeding administration.

The April 2007 general election was marred by widely documented irregularities including ballot box snatching, result sheet manipulation, and violence in numerous states, conducted under an INEC leadership that international and domestic observers said failed to deliver a credible process.

No INEC officials or state-level actors responsible for the documented irregularities were prosecuted for electoral fraud during the term, and INEC's leadership under Maurice Iwu remained in place until his term expired naturally in 2010.

CBN Governor Sanusi Lamido Sanusi's August 2009 special audit of Nigerian banks found that Oceanic Bank, led by managing director Cecilia Ibru, had extended roughly ₦191 billion in insider and margin loans to companies linked to Ibru and her associates, with weak or falsified documentation, contributing to the bank's near-collapse.

Ibru was arrested, prosecuted, and pleaded guilty in October 2010 to a reduced set of charges, receiving an 18-month prison sentence and forfeiting assets estimated at roughly $1.2 billion — one of the few large-scale financial fraud cases of the era to reach a conviction within the same administration's term.