The contact group on resolving the situation in the South-East of Ukraine began to discuss the work of the thematic sub-groups, whose Meetings were held first in Minsk, said Last news a source close to the negotiations. "Meetings of sub-working groups was completed. The contact group had begun to discuss the results of their work ", - said the head of the Department. Press Secretary of the Ministry of foreign Affairs of Belarus Dmitry Mironchik confirmed that the subgroups have finished the Meeting in Minsk.