The United States and Poland said Tuesday they hoped their good relations would not be harmed by a U.S. Senate report on brutal CIA interrogation of al-Qaida suspects in secret sites, which allegedly include one in Poland.

U.S. President Barack Obama and Polish Prime Minister Ewa Kopacz spoke by telephone ahead of the report's highly anticipated publication later Tuesday, saying they hoped it would "not have a negative impact on relations," a Polish government statement said.

Europe's top human rights court condemned U.S. NATO ally Poland in July for hosting secret CIA prisons, or "black sites," saying Warsaw knowingly abetted unlawful imprisonment and torture of two detainees later sent to the notorious U.S. Guantanamo Bay base.

Poland has flatly denied the allegations, which date back to 2002-2003 in the wake of the September 11, 2001 terrorist attacks.

The European Court of Human Rights ruled that the Polish government "enabled the U.S. authorities to subject the applicant to torture and ill-treatment on its territory," in the cases of Palestinian Abu Zubaydah, 43, and Saudi Abd al-Rahim al-Nashiri, 49.