A man died in Boryslav, Lviv Oblast in a grenade explosion, Lviv regional police reported on Facebook.
There were no other casualties in the explosion.
The incident occurred at 8:50 p.m. on May 8 on Ivasyuk Street.
A 24-year-old resident died in the explosion. There were no other people nearby at the time.
Investigators from the Drohobych district police department, forensic experts, and explosives technicians from Lviv regional police are working at the scene.
Police are working to determine the circumstances of the explosion and the munition's origin.