SMOLENSK, Russia - Russian investigators are studying the records of talks between the pilots of the crashed Polish president's plane and ground air controllers, a spokesman for the Investigative Committee said on Sunday. Poland's President Lech Kaczynski, its central bank head and the country's military chief were among 96 people killed when their plane crashed in thick fog on its approach to a Russian airporton Saturday. The President's wife and several other high-ranking government officials were also aboard the Tupolev Tu-154 that plunged into a forest about 2km (1.3 miles) from the airport in the western Russian city of Smolensk. Vladimir Markin said both investigators and aviation specialists were studying and deciphering the flight recorders found at the site of the plane's crash and were also inspecting fragments of the plane wreck. The plane was taking Kaczynski and a delegation of top Polish officials to a ceremony to pay tribute to some 20,000 Polish officers who were executed in Katyn and other locations by Soviet secret police in 1940. Markov also said that the bodies and body fragments of the air crash victims had been delivered to Moscow for identification. Jaroslaw Kaczynski, the twin brother of the late Polish president, earlier on Sunday identified the bodies of Lech Kaczynski and his wife Maria.