Lukoil Bulgaria CEO Valentin Zlatev rejected the claims that his company had violated tax or customs laws, the Sofia news agency reported on Saturday. "Lukoil does not have even one citation for tax and customs violations," Zlatev said. He also dismissed the accusations that Lukoil was a cartel on Bulgaria's fuel market. In July Customs Service chief Vanyo Tanov revoked Lukoil's license to operate excise warehouses over the company's failure to install the required electronic measuring devices. The court, however, returned the license, and the refinery resumed operations.