As reported by Censor.NET, this was announced by the aviatrix's lawyer Mark Feigin in his Twitter.
"Savchenko will remain in custody. The defense is starting making applications. The first application of the defense concerns returning the case back to the prosecution, under article 237 of the Criminal Procedural Code," he wrote.
As reported, the Russian prosecution asked the court to prolong Savchenko's arrest for another six months.