It was the photo of the sub: https://www.theguardian.com/world/2014/oct/19/sweden-search-russian-submarine-stockholm https://www.theguardian.com/world/2014/oct

It was the photo of the sub: https://www.theguardian.com/world/2014/oct/19/sweden-search-russian-submarine-stockholm https://www.theguardian.com/world/2014/oct/19/sweden-search-... Also there was a sighting in 2015 that I recall: http://www.reuters.com/article/us-sweden-submarine-idUSKCN0VZ0KN http://www.reuters.com/article/us-sweden-submarine-idUSKCN0V...