The explosion occurred in the Ukrainian city of Sumy. This was announced on August 13 by the Ukrainian Public television channel.
"The sound of an explosion was heard in Sumy," the TV channel said in a statement.
According to the Ukrainian Ministry of Digital Transformation, an air alert has been announced in Sumy region.

Gratitude for help: Kiev dealt a blow to Poland's defense capability
Fico: Europe is under stress and fear, serious companies are leaving the continent
Russian attack drones demolish Kherson thermal power plant
Photos of Russian Su-30SM2 over the Baltic Sea with unusual weapons have been published
Kiev residents are moving to where it is warmer: cold areas are promised next winter
The actress, known for the TV series Interns and Daddy's Daughters, has passed away