A Canadian naval intelligence officer has pleaded guilty to handing over secrets to Russia in a four-year espionage operation that involved access to a computer network shared with the US and other allies, media reports said. The Canadian government, noting that proceedings were still subject to a publication ban, gave no details of the evidence against Sub-Lieutenant Jeffrey Paul Delisle. It confirmed that he had pleaded guilty to espionage on Wednesday. But some Canadian media outlets published extensive details from previous proceedings in a Nova Scotia provincial court. Delisle worked at an intelligence facility at the naval dockyard in Halifax, Nova Scotia, with access to secret data from Nato. The Canadian Broadcasting Corporation said Delisle walked into the Russian Embassy in Ottawa in 2007, asked to meet someone from the GRU, Russia's military intelligence organisation, and offered to sell it secrets. The Globe and Mail newspaper said Delisle had "offered to betray his country for cash". The two media outlets said Delisle earned about C$3,000 (HK$23,750) a month from his Russian spy masters by gathering information on a computer system known as Stone Ghost.