The Nigerian government has removed nearly 24,000 workers from its payroll after an audit revealed they did not exist, foreign media reports.
The move has enabled a monthly saving of around $11,5m (£8m).
The audit is part of an anti-corruption campaign by President Muhammadu Buhari, who took power last year.
Corruption and mismanagement have long been a challenge to Nigeria's growth, and the government has promised to cut costs to face an economic slowdown.
Nigeria is Africa's biggest economy and the continent's top oil producer, and its finances are under strain due to the recent collapse in oil prices.
The country has also faced rising inflation, a stock market slump and the slowest pace of economic growth in more than a decade.
It also revealed that some employees were receiving salaries from multiple sources, reportedly.