Five Ukrainian railway stations were hit in missile strikes within an hour on Monday.
Officials accused Vladimir Putin's army of “systematically destroying” Ukraine’s infrastructure and railways in the blitz attack.
A substation in Krasne, near Lviv in Western Ukraine, was among those hit.
Video posted on social media shows firefighters battling the flames at the facility, which handles the power supply to overhead lines.
Oleksandr Kamyshin, the chief executive of the state-owned Ukrainian Railways, said: “This morning, within an hour, five railway stations in central and western Ukraine came under fire."
He added that at least 16 passenger trains would be delayed and some people had been injured in the attacks.
Officials were seeking details on the number of people hurt.
Railway stations have been a key target for the Kremlin as it seeks to cripple Ukraine’s ability to move weapons and troops.
A missile attack earlier this month killed 59 people at a station in Kramatorsk, in the east of the country.
Officials said thousands of people were waiting for evacuation trains and were desperate to flee heavy Russian shelling.
Maksym Kozytskyi, head of the regional government in Lviv, said on Monday that the explosion in Krasne occurred about 8.30am.
The missiles were fired from the south-east by a Russian strategic craft and one missile was destroyed by Ukrainian air defence forces, he added.
