Johnson-Sirleaf, a Nobel peace laureate, has pledged to fight graft as the West African country strives to recover from a sporadic 14-year civil conflict that ended in 2003 and left its once-prosperous economy in tatters.
A presidency statement said Auditor-General Robert Kilby, who took office last year, was being dismissed for a clear conflict of interest due to his private business dealings.
Pearine Davis-Parkinson, director-general of the General Services Agency (GSA), was dismissed for approving contracts involving Kilby in violation of Liberian law.
Davis-Parkinson told a parliamentary committee last week the GSA had employed an accounting firm owned by Kilby to set up an asset tracking system for the government.
“Join me in our continued fight against corruption,” Johnson-Sirleaf said in a statement announcing the dismissals.
A recent audit of resource contracts by the accounting firm Moore Stephens showed that almost all the $8bn worth of resource contracts signed since 2009 violated Liberia’s laws and showed irregularities.
Johnson-Sirleaf told Reuters that the audit had been designed to highlight problems so that they could be addressed, and her government was taking action to do so.
She has forecast that economic growth, which has averaged 6.5% over the past four years, will hit double digits within two years as foreign investment starts to have an impact.