Reports emerged that Russian troops had abducted the mayor of Slavutych, Yuri Fomichev; he was ultimately released in time to address a protest rally against the Russian invasion which took place later that day in the city square.[8] More than 5,000 residents of the city took part in the peaceful protest,[9] until it was disrupted by Russian troops firing warning shots and launching stun grenades into the crowd, injuring at least one civilian.[10] Footage of protesters fleeing stun grenades circulated online internationally; the attack on a peaceful protest rally by civilians is a possible war crime.