Prime Minister of Ukraine Arseniy Yatsenyuk promised that the proceedings of criminal cases on the murder of journalist Olesya Elder and ex-the Deputy from Party of regions Oleg Kalashnikov will be completed. Journalist and publicist Elder was killed in Kiev on Thursday, a Kalashnikov on Wednesday. "Created investigative team that includes the best Experts of the Prosecutor General of Ukraine and the Ministry of internal Affairs, the proceedings under constant supervision, and I think this trial will be completed, and I am sure that the criminals will be found ", - said Yatsenyuk on Sunday in interview to television channel.