On 11 April 2010, President Kaczyński's body was returned to Poland, where he and his wife lay in state at the Presidential Palace in Warsaw. The state funeral was held in Kraków on 18 April 2010. After a Roman Catholic mass at St. Mary's Basilica, the presidential couple were laid to rest in a coffin, which was placed in the antechamber of the Crypt Under the Tower of Silver Bells beneath the Wawel Cathedral. A significant number of foreign dignitaries were unable to attend the funeral as a result of air travel disruption in Europe following the eruption of the volcano Eyjafjallajökull in Iceland.