The European Commission has opened an investigation into contracts concluded between the Czech authorities and bus operators. The Commission suspects that the bus operators are being overpaid for the services they provide and therefore the contracts could amount to illegal State aid. Under State aid rules, public service contracts should be granted following a competitive tender procedure, or reflect the costs of a well run operator, in order to ensure that there is no overpayment. The Commission will investigate whether these conditions have been satisfied and invites comments from interested parties.