Head of the Responsible Citizens volunteer group Maryna Cherenkova has been detained in Donetsk, a member of the group Enrique Menendez has reported.

"We have unpleasant news. Yesterday our Maryna Cherenkova was detained at her house in Donetsk. Reportedly by the M GB [so-called Ministry of State Security of the self-proclaimed Donetsk People's Republic], as she managed to send a message to us that she has been taken by the M GB. We cannot reach her anymore," Menendez wrote on his Facebook page on Saturday.