On the morning of May 1, Ukrainian forces—reportedly Right Sector members—attacked a pro-Russia militia guard post on the outskirts of Krasnoarmeysk, taking 11 local militia men with them. Soon after, a crowd from Krasnoarmeysk gathered in front of a Right Sector base, where they tried to find out their friends' fate. Having no luck, the crowd decided to return to Krasnoarmeysk and storm the local police building to show their protest towards police negligence.