A Russian missile strike on a Ukrainian army training area killed at least 12 soldiers and wounded dozens more Sunday, Kyiv said, in a rare admission of its military losses.
Kyiv did not say where the strike took place, but stressed the soldiers were not taking part in a "mass gathering" and most were in their shelters during the attack.
The Ukrainian army has, in recent weeks, faced pressure to investigate what some see as glaring lapses in ensuring the safety of training soldiers.
Six soldiers training close to the border were killed by a Russian strike last month, in what one Ukrainian opposition politician called a "crime" by the army leadership.
"Today, on June 1, the enemy launched a missile strike on the location of one of the training units of the Ukrainian army," the Ukrainian army said in a statement.
"As of 12:50 p.m., 12 people are known to have been killed and more than 60 wounded."
"If it is established that the deaths and injuries of the servicemen were caused by the actions or inaction of officials, those responsible will be brought to strict accountability," it added.
Separately on Sunday, the Russian army said it had captured another village in Ukraine's northern Sumy region, where Kyiv fears Moscow could mount a fresh ground assault.
Russia claims to have captured several settlements in the region in recent weeks and has massed more than 50,000 soldiers on the other side of the border, according to Ukrainian President Volodymyr Zelensky.
Authorities in the region have evacuated more than 200 villages amid intensified shelling.
A Message from The Moscow Times:
Dear readers,
We are facing unprecedented challenges. Russia's Prosecutor General's Office has designated The Moscow Times as an "undesirable" organization, criminalizing our work and putting our staff at risk of prosecution. This follows our earlier unjust labeling as a "foreign agent."
These actions are direct attempts to silence independent journalism in Russia. The authorities claim our work "discredits the decisions of the Russian leadership." We see things differently: we strive to provide accurate, unbiased reporting on Russia.
We, the journalists of The Moscow Times, refuse to be silenced. But to continue our work, we need your help.
Your support, no matter how small, makes a world of difference. If you can, please support us monthly starting from just $2. It's quick to set up, and every contribution makes a significant impact.
By supporting The Moscow Times, you're defending open, independent journalism in the face of repression. Thank you for standing with us.

Remind me later.