A fresh revelation coming just days after Barrack Obama’s visit to the US show that only 26% of money spent and collected by the Kenyan government has been fully approved in an audit for 2013-2014.

The auditor-general, whose report covered an annual budget of about $16bn (£10bn), said there were "disturbing problems" in government's accounting.

The US President, Barack Obama had earlier warned on his visit to Africa that "the cancer of corruption" was holding the continent back.

With Kenya ranked 145th out of 174 nations on the Transparency International’s global corruption perceptions index, the country stands as one of the world’s most corrupt countries

The East African nation's accounts are better than they were the year before, when the auditor-general said that only 12% of them were "true and fair".

The report released on Wednesday said that it was obvious that there were "still persistent and disturbing problems in collection and accounting for revenue".

Auditor-general Edward Ouko said that 16% of financial statements, including revenue and spending statements, from government ministries were "misleading".

Among the numerous items being questioned are empty office spaces paid by the police and 32 faulty armoured vehicles for the military.

The health department's accounts were particularly worrying as they failed to account for 22bn Kenyan shillings ($216m; £139m) worth of spending, the report said.

The auditor-general also noted that $2bn had been transferred to an offshore account, against regulations.

"There is the risk of proceeds being appropriated without the authority of the Controller of Budget," he said.

It is not the first time government accounts have been called into question.

Over 12,000 false names were found on the government’s payroll when the authorities started biometrically registering all civil servants in 2014.

In March, President Uhuru Kenyatta suspended four cabinet ministers in March and 12 other high-ranking officials after they were implicated in corrupt deals.