WARSAW, July 19 (Xinhua) -- During his visit to Russia Polish Justice Minister Krzysztof Kwiatkowski has asked for Smolensk air crash victims' post-mortem protocols to be handed over to Poland as a matter of priority, Poland's Justice Ministry said on Monday.
Kwiatkowski paid a visit to St. Petersburg from July 18-19. During the visit he met with his Russian counterpart Alexander Konovalov.
Russia said Monday that investigation into the Smolensk plane crash has been extended until October.
Poland's President Lech Kaczynski, his wife Maria, and 94 passengers of the presidential plane were killed in the air crash near Smolensk on April 10.
Poland's prosecution should receive five-six volumes of Smolensk crash inquiry files from Russia within several weeks, spokesman for General Prosecutors' Office Mateusz Martyniuk said, quoted by the PAP news agency.
To-date Russia has handed over to Poland six volumes of files. Poland is waiting for crash victims' post-mortem protocols. So-far only President Lech Kaczynski's post-mortem protocol has been sent to Poland
Kwiatkowski's visit has been the first visit of this type by Poland's justice minister to Russia in 25 years.