Updated

Poland's conservative ruling party leader says the government will not back Donald Tusk, a former prime minister, for a second term as European Council head.

Jaroslaw Kaczynski said in comments published on the "Polska The Times" website Tuesday that Tusk might face charges in Poland and the European Union should be warned. He said that would not bar Tusk from winning a second term in an EU vote next year.

In Poland, a special aviation commission and prosecutors have opened new investigations into the 2010 death of President Lech Kaczynski and 95 others in a plane crash in Russia. Polish and Russian commissions have blamed the crash on human error in bad visibility conditions.

Jaroslaw Kaczynski, the late president's twin brother, says Tusk is primarily responsible for the crash.