"We have not stopped, we have chosen to freeze" a part of the aid budget, she said, adding that Rwanda should "take up its responsibilities for the development of the region."
The United States, the Netherlands and Germany have already suspended all or part of their aid to Rwanda since a UN report in June accused high-ranking Rwandan officials of backing army mutineers in eastern DR Congo, who have formed a rebel group called M23.
Rwanda strongly denies the allegation and has in turn accused the Kinshasa government of backing Rwandan Hutu rebels of the Democratic Forces for the Liberation of Rwanda (FDLR), who also operate in eastern DR Congo and are opposed to the Rwandan regime of President Paul Kagame.
Asked by AFP what a partial freeze of Swedish aid would entail, the Swedish foreign ministry gave no details.
In 2011, Sweden gave Rwanda aid worth 215 million kronor ($32.2 million).
A summit of the African Great Lakes nations, which include Rwanda and DR Congo, was held last week to open the way for a neutral force to eradicate the armed groups operating in eastern DR Congo, but it ended Wednesday with no significant outcome.