At least 19 mobile phones which belonged to Tu-154 passengers were on during the flight, the Head of Polish Military Prosecutor’s Office Ireneusz Szelag stated.

According to him, the late president Lech Kaczynski’s phone is too damaged to be used in the investigation, BFM.ru reports.

Szelag also said Polish General Prosecutor’s Office made а plan of conducting the investigation till January 10, 2011.

As NEWS.am reported previously, on April 10, 2010 Polish President Lech Kaczynski, his spouse Maria Kaczynska and scores of other senior Polish figures were killed in a plane crash near Smolensk in Russia.