Russian forces are firing rockets from Grad launchers at a physics institute which hold a nuclear reactor and other materials in the city of Kharkiv.

The Ukraine’s national security service has warned that a missile strike on the nuclear facility could lead to “large-scale ecological disaster.”

The institute in Kharkiv  was responsible for the first nuclear bomb which was made during the Soviet Union.

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Grad missiles do not have precise targeting and can easily go astray and the Ukrainian President Volodymyr Zelensky is requesting either NATO or other foreign countries impose a no-fly zone in the country.

Zelensky said in a video address that “the world is strong enough to close our skies.”

The Kyiv Independent tweeted, “Russian troops shell nuclear research facility in Kharkiv.

“The Kharkiv branch of Ukraine’s Security Service reported that Russia used Grad multiple rocket launchers to shell the Kharkiv Physics and Technology Institute.”

The Ukrainian Foreign Minister Emine Dzheppar warned, the physics institute has “the Neutron Source nuclear research facility and contains 37 nuclear fuel cells in its core.”

This latest attack comes after Europe’s largest nuclear power plant was attacked with shells by Russian troops on Friday.