Remembrances were conducted in Warsaw, other Polish cities and in the city of Smolensk, where the accident occurred.
The Polish delegation was traveling to memorial ceremonies in Katyn, Russia, site of a massacre of Polish Army officers by the Soviet secret police in 1940. The plane crashed as it attempted to land at the Smolensk military airport.
Polish Prime Minister Donald Tusk participated in commemoration ceremonies at the Powazki cemetery in Warsaw where 28 of the victims are buried. The daughter of Kaczynski placed flowers at the tomb of her parents in Krakow, and delegations from Warsaw and Moscow laid wreaths at the Smolensk crash site.
Poland’s Law and Justice political party, which included Kaczynski, remains convinced the crash was an assassination attempt. Party leader Jaroslaw Kaczynski, the Lech Kaczynski’s twin brother, said Poles “needed the truth” about the incident.
On Monday prosecutors ruled out the possibility of a bomb explosion aboard the plane. Technical failure and pilot error remained the suspected causes.