The law enforcement agencies in Lviv are investigating an unauthorized set-off of the city emergency sirens late Monday, the press service of the Lviv Regional State Administration told UNIAN.
"Sirens in Lviv were set off unreasonably. The law enforcement agencies are carrying out a probe," the Department of Civil Protection of the State Administration said.
However, the press service of the Lviv City Council said that sirens were heard across the city due to a "system failure."
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