In fact, the initial evidence in other countries that a major release of radioactive material had occurred came not from Soviet sources, but from Sweden, where on 28 April workers at the Forsmark Nuclear Power Plant (approximately 1100 km from the Chernobyl site) were found to have radioactive particles on their clothing.
Počiatočné dôkazy, že sa stala veľká jadrová havária, nepriniesli sovietske zdroje, ale pochádzajú zo Švédska, kde 27. apríla pracovníci jadrovej elektrárne Forsmark (približne 1 100 km od Černobyľa) našli rádioaktívne častice na svojom oblečení.