The police already know the names of the people involved in the murder of Judge Volodymyr Trofymov and his family in Kharkiv, Ukraine's Interior Minister Vitaliy Zakharchenko said on ICTV channel.

"As of today, we have a certain theory, which is in my opinion the most probable… We are currently searching for several individuals who in our opinion could be involved in the crime. So, we already know the names of these people," Zakharchenko said.

At the same time, the minister said there was no absolute certainty that these people had killed the judge. "But we are certain that they were involved in the crime," the minister said.

Zakharchenko also said that Trofymov and his family were not killed for revenge.

"We cannot talk about revenge. The judge did not consider such cases in court for which one could take revenge," he said.

As reported, on December 16, 2012, the decapitated bodies of 58-year-old judge Trofymov, his 59-year-old wife, 30-year-old son and his son's 19-year-old girlfriend were found in the judge's flat. A criminal case under Article 115 (premeditated murder) was opened.

Investigators believe that the theft of the coin collection of Trofymov was the motive for the murder of the judge and his family. The investigation is also working on a line of inquiry on the professional activities of judge Trofymov.

On December 19, 2012, Ukrainian President Viktor Yanukovych also made an announcement: "I have ordered an investigation into the case of the murder of the judge and his family, as it is a challenge to the whole of Ukrainian society. Solving this crime is a matter of honor for all of the law enforcement agencies," he said.

On February 27, 2013, Zakharchenko said that some of Trofymov's belongings started surfacing in Kramatorsk, Donetsk region, as well as other towns.