Official results from Poland's presidential runoff weren't expected until Monday, but exit polls gave interim President Bronislaw Komorowski a slight lead over challenger Jaroslaw Kaczynski, the twin brother of the late president.
Russian and Polish aviation experts have ruled out any emergency or equipment malfunction as the cause of the crash of Polish President Lech Kaczynski's plane in Russia last month, killing him and 95 other top Polish officials and dignitaries.
Numerous world leaders were forced to cancel plans to travel to Poland for the funeral of President Lech Kaczynski on Sunday, as volcanic ash from Iceland continued to ground flights to and from Europe.
Polish President Lech Kaczynski's plane, which crashed Saturday in western Russia, killing Kaczynski and scores of other people, was overhauled last year, according to the general director of the company that performed the service.
The tragic death of President Lech Kaczynski and Poland's political and military elite among the trees of the Katyn Forest is surreal, given that in those same woods, thousands of Polish prisoners of war were murdered by Joseph Stalin's secret police.
U.S. President-elect Barack Obama has made "no commitment" to plans for a missile defense program in eastern Europe, despite a report on the Polish president's Web site, an Obama adviser said Saturday.