"Today we are trying to immediately get in touch with Komsomolskaya Pravda's editor-in-chief and journalists in order to understand if this is an actual individual so as to get his contact information and meet with him," Markin said.
According to the spokesman, "all of the information that is expressed in it [Komsomolskaya Pravda] from the words of a Ukrainian citizen is very interesting because the Russian Investigative Committee is investigating a criminal case in the use of banned means and methods of holding war."
Komsomolskaya Pravda newspaper published an interview with Ukrainian airbase employee, who said he knows how the Malaysian Boeing crashed.
The employee, who claims to be an eyewitness, said a Ukrainian air force Su-25 combat jet took off from an airbase in eastern Dnipropetrovsk carrying air-to-air missiles and returned without them on the day a Malaysia Airlines plane crashed in eastern Ukraine.
The airbase worker said he remembered the pilot saying "the wrong plane" and "the plane was in the wrong place at the wrong time" after he returned from the flight.
He did not exclude the possibility that the Su-25 pilot could confuse a Boeing passenger airliner with a military jet.
The source stressed that the missiles carried by the Su-25 are capable of targeting an object at a 3-5-kilometer (1-3 mile) distance, and to an altitude of 7,000 meters (23,000 feet).
The incident with flight MH17, a Malaysian Airlines Boeing passenger aircraft, which crashed on July 17 in the Donetsk region, en route from Amsterdam to Kuala Lumpur, is being investigated by an international group headed by the Dutch Safety Board. The board's final report is expected to be released in 2015.
Kiev has accused independence supporters in Ukraine's southeast of shooting the plane down, but provided no evidence confirming the claim. The independence supporters say they do not have weapons which could down a plane flying at such a high altitude.
