At 22:10 MSK (18:10 UTC) on March 4, 2014 the Strategic Rocket Forces conducted a launch of a Topol/SS-25 ICBM from the Kapustin Yar test site toward Sary Shagan. According to a representative of the ministry of defense, the launch was used to test a new type of combat payload ("for the Rocket Forces and the Navy") and the test warhead successfully reached its target.
Tests of new warheads in Topol launches from Kapustin Yar to Sary Shagan have became fairly common - this is the third such test since October 2013 (the second one took place in December 2013). This suggests that the development of a new warhead (or warheads) is a fairly active program.
Although the test took place at the time of increased tensions caused by Russia's military intervention in Ukraine, the launch was definitely not related to these developments as these tests are normally scheduled some time in advance. At the same time, the timing of the test could serve as an illustration of an unpredictable and potentially dangerous interaction between nominally unrelated events.