She stated the opinion at a meeting with her Swedish counterpart, Per Westerburg, in Vilnius on Thursday.
"This is alarming news for Lithuania, Sweden and the rest of the countries in the Baltic Sea region," Degutienė said in a press release circulated by the parliament's Public Relations Division.
According to the communiqué, Russia has not analyzed potential environmental effects that would be caused by transporting radioactive waste by sea.
The Lithuanian parliamentary speaker also emphasized that active regional cooperation between the Baltic and the Nordic states is one of Lithuania's foreign policy priorities.
"In the face of the continuing financial and monetary crisis, today's economic policy of the Nordic and the Baltic states is an alternative example for the European Union's (EU) southern members," she added.
Russia expects to start operating the Baltic nuclear plant in Kaliningrad close to Lithuania's border in 2017. Lithuania maintains it has not yet received satisfactory answers about the power plant's environmental impact.
