Russia tells IAEA it is incident-free after nuclear particle increase

Russia has told the U.N. atomic watchdog there have been no nuclear incidents on its territory that could explain elevated but still harmless levels of radioactive particles detected on the Baltic Sea last week, the U.N. agency said on Tuesday.

A separate body, the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO), which watches for nuclear weapon tests, said on Friday a monitoring station in Sweden had found higher-than-usual levels of caesium-134, caesium-137 and ruthenium-103. The CTBTO said they were produced by nuclear fission.

“Apart from Estonia, Finland and Sweden, none of the other countries which have so far provided information and data to the IAEA said they had detected elevated radioisotope levels,” said the IAEA, which asked member states for information over the weekend after the CTBTO announcement.

Asked on Monday if Russia was the origin of the elevated particle levels, Kremlin spokesman Dmitry Peskov said Moscow had detected no sign of a radiation emergency.