This photo taken on Oct. 7, 2018, shows a billboard that reads "The State Central Navy Testing Range" near residential buildings in the village of Nyonoksa, northwestern Russia. (Associated Press/Sergei Yakovlev)
A mysterious explosion at a Russian weapons testing site earlier this month released various radioactive isotopes, creating a cloud of radioactive gases that swept across a nearby town, the country's state weather agency revealed Monday, and experts said the mixture removes all doubt about what exactly blew up earlier this month.
This photo taken on Oct. 7, 2018, shows a billboard that reads "The State Central Navy Testing Range" near residential buildings in the village of Nyonoksa, northwestern Russia. The Aug. 8, 2019, explosion of a rocket engine at the Russian navy's testing range just outside Nyonoksa led to a brief spike in radiation levels and raised new questions about prospective Russian weapons. (AP Photo/Sergei Yakovlev)
It's been more than a week since a mysterious Russian nuclear accident roughly 600 miles north of Moscow and only the Kremlin and those killed know what happened.
What is known is something exploded on Aug. 8 at a naval weapons testing range near the village of Nyonoksa. The Russian government's official account of the accident has changed several times since then, but the country's weather agency recently confirmed that radiation levels jumped to 16 times greater than normal after the blast.