(Telecompaper) Slovak regulator RU has cancelled the auction for frequencies in the 1,800 MHz band, arguing a significant change in circumstances since the call for tenders was announced. The invitation was published on 06 April and the applications were accepted until 09 May. On 10 May, RU cancelled the auction, informed the participants about the cancellation, returned their bids in unopened envelopes and returned the paid vadiums to their accounts.