According to Eduard Basurin, one of the Su-25s was downed near the village of Komissarivka while the second — near the village of Chernukhine.
Both pilots ejected, and one of them landed on the territory controlled by DPR militia, Basurin said.
Pro-independence forces in the neighboring Luhansk People's Republic (LPR) said earlier in the day they had downed a Ukrainian warplane near the town of Irmine, 35 miles away from the regional capital Luhansk. The Ukrainian Defense Ministry did not confirm this report.
Kiev has been conducting a military operation in the southeast since a standoff between the new government and local opposition forces spiraled into an armed conflict in April 2014. The operation's press center said earlier militias had allegedly carried out over 70 mortar attacks against government troops' positions in the past 24 hours.