1 of 10
Poland Observes Second Smolensk Presidential Plane Disaster Anniversary
Jaroslaw Kaczynski (C), brother of Poland's former President Lech Kaczynski, prays as he takes part in a event outside the Presidential Palace in Warsaw April 10, 2012. The event was held to commemorate the second anniversary of the 2010 plane crash at Smolensk airport that killed Lech Kaczynski, his wife Maria and 94 others.Reuters
Poland Observes Second Smolensk Presidential Plane Disaster Anniversary
A man visits the site of a 2010 plane crash that killed former Poland's President Lech Kaczynski and 95 others near the Russian city of Smolensk, April 9, 2012. Kaczynski, his wife Maria, and 94 others died on April 10, 2010, when their plane crashed in thick fog while trying to land at Smolensk in western Russia.Reuters
Poland Observes Second Smolensk Presidential Plane Disaster Anniversary
The remains of a plane that crashed in 2010, killing Poland's former president, Lech Kaczynski and 95 others, is shown to the media at a military aerodrome near the Russian city of Smolensk April 10, 2012. Kaczynski, his wife Maria, and a sizeable chunk of Poland's military and political elite died on April 10, 2010, when their plane crashed in thick fog while trying to land at Smolensk in western Russia.Reuters
Poland Observes Second Smolensk Presidential Plane Disaster Anniversary
Polish visitors place flags at the site of a 2010 plane crash that killed former Poland's President Lech Kaczynski and 95 others near the Russian city of Smolensk, April 10, 2012. Kaczynski, his wife Maria, and a sizeable chunk of Poland's military and political elite died on April 10, 2010, when their plane crashed in thick fog while trying to land at Smolensk in western Russia.Reuters
Poland Observes Second Smolensk Presidential Plane Disaster Anniversary
Jaroslaw Kaczynski (C), brother of Poland's former President Lech Kaczynski, lays a wreath as he takes part in a event outside the Presidential Palace in Warsaw April 10, 2012. The event was held to commemorate the second anniversary of the 2010 plane crash at Smolensk airport that killed Lech Kaczynski, his wife Maria and 94 others.Reuters
Poland Observes Second Smolensk Presidential Plane Disaster Anniversary
Jaroslaw Kaczynski (C), brother of Poland's former President Lech Kaczynski, lays a wreath as he takes part in a event outside the Presidential Palace in Warsaw April 10, 2012. The event was held to commemorate the second anniversary of the 2010 plane crash at Smolensk airport that killed Lech Kaczynski, his wife Maria and 94 others.Reuters
Poland Observes Second Smolensk Presidential Plane Disaster Anniversary
People take part in a event outside the Presidential Palace in Warsaw April 10, 2012. The event was held to commemorate the second anniversary of the 2010 plane crash at Smolensk airport that killed Poland's former President Lech Kaczynski, his wife Maria and 94 others.Reuters
Poland Observes Second Smolensk Presidential Plane Disaster Anniversary
People take part in an event outside the Presidential Palace in Warsaw April 10, 2012. The event was held to commemorate the second anniversary of the 2010 plane crash at Smolensk airport that killed Poland's former President Lech Kaczynski, his wife Maria and 94 others.Reuters
Poland Observes Second Smolensk Presidential Plane Disaster Anniversary
People take part in a event outside the Presidential Palace in Warsaw April 10, 2012. The event was held to commemorate the second anniversary of the 2010 plane crash at Smolensk airport that killed Poland's former President Lech Kaczynski (rear R), his wife Maria (rear L) and 94 others.Reuters
Poland Observes Second Smolensk Presidential Plane Disaster Anniversary
Jaroslaw Kaczynski (C), brother of Poland's former President Lech Kaczynski, lays a wreath as he takes part in a event outside the Presidential Palace in Warsaw April 10, 2012. The event was held to commemorate the second anniversary of the 2010 plane crash at Smolensk airport that killed Lech Kaczynski, his wife Maria and 94 others.Reuters

Two years after a gruesome plane crash that killed Poland's former president, Lech Kaczynski and 95 others on10 April, memorial services are being held in parts of Russia and Poland.

The accident involved a high profile delegation who was en route from Warsaw to attend an event marking the 70th anniversary of the 1940 Katyn forest massacre. Included in the list of delegates were the Polish president Lech KaczyƄski and his wife; former president Ryszard Kaczorowski; the chief of the Polish General Staff and other senior Polish military officers. Apart from this, the Tupolev Tu-154M aircraft also included Poland's deputy foreign minister, Polish government officials, 15 members of the Polish parliament, senior members of the Polish clergy and relatives of victims of the Katyn massacre.

To commemorate the event and pay their tributes to the victims, a Polish delegation of 150 crash victims' relatives, officials and the Minister of Culture Bogdan Zdrojewski attended the services at the site of the tragedy.

There was also a prayer service held by a Catholic clergyman and an Orthodox priest.

Present at the event were President Bronislaw Komorowski who laid flowers at a plaque to the victims that was placed on the Presidential Palace. Besides him, Jaroslaw Kaczynski, brother of Poland's former President Lech Kaczynski, also took part in the service and added lights, flowers and a wooden cross.

According to Associated Press, Kaczynski, the head of the nationalist Law and Justice party, has been fueling theories that the crash was an assassination. Hs followers have been mentioning the names of Russia's Prime Minister Vladimir Putin and Poland's leaders in this context. Such proclamations have created divisions in the Polish society and followers of Kaczynski set fire to effigies of Putin and of Polish Prime Minister Donald Tusk on 9 April, to show they believe the crash was an assassination.

However, investigators concluded that it was bad weather and mistakes by the Polish Air Force detachment in charge of transporting the president, as well as errors by Russian air-traffic controllers that lead to the accident two years ago.

Start the slideshow to get a glimpse of the anniversary services conducted in Poland: