Kiev (dpa) - Ukrainian authorities on Wednesday detained a suspected spy who had been working in the cabinet of Prime Minister Volodymyr Groysman.The suspect is accused of collecting data on the activities of governmental institutions and passing it electronically to Russian contacts, the Security Service of Ukraine said in a statement.Groysman accused the suspect of working for a "hostile state," according to a post on his Facebook page. The suspect faces up to 15 years in prison for high treason.Relations between Russia and Ukraine have fallen to an all-time low since early 2014, when Ukraine ousted its pro-Russian president amid mass protests calling for closer ties with the West.Russia condemned the ouster as a Western-orchestrated coup and retaliated by annexing Ukrainelsquo;s southern Crimea region and supporting a pro-Russian separatist rebellion in Ukrainelsquo;s two eastern-most regions, which border Russia.More than 10,000 people have been killed in the ongoing conflict in eastern Ukraine.