Europe On Alert After Unknown Radioactivity Spike Detected Over Baltic Sea

Almost a year ago Russia admitted to releasing significant amounts of radiation into the air that triggered warning alerts in the region of the far north Arctic Circle port cities of Arkhangelsk and Severodvinsk, after a failed weapons test involving a “small-scale nuclear reactor” that killed Russian scientists - which was believed connected to Russia's hypersonics program.

We can't help but recall that incident now with new reports of radiation sensors based in Scandinavia again picking up abnormal radioactivity levels in the air. Perhaps there's some further failed weapons tests happening somewhere in the region?:

"Radiation sensors in Stockholm have detected higher-than-usual but still harmless levels of isotopes produced by nuclear fission, probably from somewhere on or near the Baltic Sea, a body running a worldwide network of the sensors said on Friday," Reuters reports.
@SinaZerbo