"22 /23 June 2020, RN IMS station SEP63 Sweden detected 3isotopes; Cs-134, Cs-137 & Ru-103 associated w/Nuclear fission at higher than usual levels (but not harmful for human health). The possible source region in the 72h preceding detection is shown in orange on the map." A mysterious radiation spike has been reported over parts of Northern Europe. Calculations made by Dutch officials indicate that the radiation comes from the direction of western Russia. "The combination of radionuclides may be explained by an anomaly in the fuel elements of a nuclear power plant," said the Dutch National Institute for Public Health and the Environment (RIVM) in a statement. RIVM performed calculations to find out the source of the radionuclides. "The calculations indicate that the nuclides come from the direction of western Russia. Determining a more specific source location is not possible with the limited data available." "No specific country of origin can be pointed out at this moment," it added.