The corvette was spotted about 12 kilometers off of Latvia's Exclusive Economic Zone (EEZ) waters.
Armed Forces on 22 APR in LV EEZ 6,5 nmi from territ. waters spotted RU Navy's Steregushchy-class corvette Stoikiy 545.— NBS (@Latvijas_armija) April 22, 2015
Russian naval ships are a frequent sight in the Baltic, often skirting the edges of the territorial waters of other states, but not so far having committed any recorded violations other than the incident off Stockholm when a Russian submarine was believed to have violated Swedish waters.
The latest sighting coincided with a visit to the region by the Commander of the US 6th Fleet, Vice Admiral James G. Foggo, who was on a visit to Estonia Wednesday.
"In the changed security situation, it is extremely important to increase the activities of the Allies in the Baltic region on land, at sea and in the air," the Chairman of the Estonian parliament's National Defence Committee Marko Mihkelson said after a meeting with Foggo.
"The constant and active operations of the Allies' fleet to increase deterrence in the Baltic Sea are very important," Mihkelson said.
Vice Admiral James G. Foggo assured at the meeting that he believes in NATO collective defense and Article 5. He also thanked Estonia for participating in NATO missions.
This summer, the large-scale military exercise of the Allies BALTOPS will be held in the Baltic Sea.