Alfred Mutua (file photo)

The government of Kenya says it has targeted thieves, not political opponents, in a corruption investigation that has caused three cabinet ministers to resign their posts.

Government spokesman Alfred Mutua said Sunday some have accused the government of witch-hunting, but Mutua said the government will not discriminate in its effort to bring thieves to justice.

Mutua told reporters the signs of corruption were all around, citing holes in recently built roads. He said those involved in what he called "shoddy deals" would be held accountable.

On Friday, thousands of protesters took to the streets of Nairobi, demanding the resignations of Vice President Moody Awori and civil service chief Francis Muthaura.

Their names have been mentioned in connection with a multi-million dollar scandal known as the "Anglo Leasing" affair.