Russian radio call picked up by Swedish military , report says . `` They could be mapping the waters in order to be able to navigate them in the event of hostilities , '' Wiktorin is quoted as saying . Radio call sent to Russian Navy on Baltic Sea , report says . Russia denies any presence in Swedish waters . Russian military has been active around world this week .
Russian radio call picked up by Swedish military , report says . Radio call sent to Russian Navy on Baltic Sea , report says . Russia denies any presence in Swedish waters . Russian military has been active around world this week .