During his visit to Moscow on Tuesday, Poland's Chief Military Prosecutor Col. Krzysztof Parulski may receive documents on Russia's investigation into the April crash of a Polish presidential plane.

Russian and Polish experts are jointly probing the causes of the deadly crash, while Polish military prosecutors are conducting their own investigation.

Parulski is expected to receive documents on the case, including eyewitnesses' statements, photographs and autopsy reports, during his scheduled meeting with Russian Prosecutor General Yury Chaika.

"The chief military prosecutor will receive 11 volumes with documents on the case. Negotiations on transferring more documents to the Polish side will also be held," Polish prosecutors' spokesman Jerzy Artymiak told journalists in Warsaw.

Russian Prosecutor General Yuri Chaika told his Polish counterpart Andrzej Seremet in early May that Russia is prepared to transfer to Poland about 500 documents on the crash of the presidential Tu-154 plane.

Chaika also expressed hope that Russia would receive from Poland all documents it needed to investigate the crash.

Polish President Lech Kaczynski, his wife, and a delegation of senior Polish officials died when their plane crashed in thick fog near the west Russian town of Smolensk on April 10. They were on their way to a ceremony to pay tribute to some 20,000 Polish officers murdered by Soviet secret police in the Katyn massacre.

There were 96 people on board the plane, including 8 crewmembers. No one survived.

MOSCOW / WARSAW, August 17 (RIA Novosti)