https://www.mercurynews.com/2022/03/21/live-updates-ukraine-says-russia-shelled-chemical-plant/

KYIV, Ukraine — Ukraine’s prosecutor general said a Russian shell struck a chemical plant outside the city of Sumy a little after 3 a.m. Monday, causing a leak in a 50-ton tank of ammonia that took hours to contain.

Russian military spokesman Igor Konashenkov claimed the leak was a “planned provocation” by Ukrainian forces to falsely accuse Russia of a chemical attack.