Russian intelligence News
Washington separately imposed sanctions on another two men and four Russian institutes.
It said were involved in chemical weapons research or what it described as an assassination attempt against Navalny.
Moscow has rejected their findings and accused the West of a smear campaign against it.
The arrested person works in the Swedish high-tech industry and has information of interest to foreign intelligence services, the Security Police said.
Dutch authorities disrupted an attempt in April by Russian intelligence agents to hack the Organization for the Prohibition of Chemical Weapons.
Russia's FSB security agency on Monday said the Telegram messaging service was used by those behind the Saint Petersburg metro bombing.
Since Moscow began air strikes, on various hideouts of ISIS, in support of Syria's government, this is the first video from the dreaded group to show the apparent execution of a Russian.
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