Kenya's central bank is considering harsher penalties for commercial banks that flout the rules and it may publicise enforcement actions that it takes against errant banks, the central bank governor said on Thursday.

The financial system in East Africa's biggest economy was rattled last month after the central bank put Imperial, a mid-sized lender, under management, due to fraud.

Patrick Njoroge told the finance committee of the national assembly the review of the penalties will be a part of the bank's plan to strengthen supervision of lenders in the wake of the collapse of Imperial. He has already admitted the regulator missed the problems at Imperial.

Gerald Nyaoma, the director of bank supervision at the central bank, told Reuters the details of the harsher penalties will be worked out at a later stage.

The central bank may consider publishing details of penalties against banks that violate laws, only after the fact, in order to avoid a run on any institution facing regulatory actions.

Njoroge told lawmakers that Kenya, which he said has 42 commercial banks, has seen 25 banks go under in its history and therefore there was an urgent need to boost supervision to prevent another failure.