Russia said on Monday that reports that one of its submarines had entered Swedish waters were based on a mix-up with a Dutch vessel.
A Defense Ministry official in Moscow said that a Dutch submarine, the Bruinvis, performed a training mission off Stockholm last week that included emergency surfacing.
"In order to reduce the Swedish taxpayers' burden, we recommend that (Sweden) ask the Dutch navy for an explanation," Russian news agencies quoted the unnamed ministry official as saying.
The Swedish military said over the weekend that it was searching for a foreign submarine among the islands off the coast of Stockholm, after eyewitnesses had reported suspicious "underwater operations."
A Swedish navy spokesman did not confirm or deny media reports that the search was for a crippled Russian submarine that had sent out an emergency call.
The Russian ministry official said Moscow had no submarines in the area.
He said that the Dutch submarine had traveled to the Estonian capital Tallin and was likely to start its homeward journey to the Netherlands.