A rights group said Friday it had obtained records indicating that seven CIA planes landed in Poland in 2002 and 2003, backing claims of a secret interrogation facility for Al-Qaeda suspects. The official records showed that five of the planes that landed at a remote northeastern airfield had arrived with passengers but left with only crew, the Warsaw branch of the independent Helsinki Foundation for Human Rights said. 'From the letter of the Border Guard Office, it results that between 5 December 2002 and 22 September 2003 seven planes which are commonly associated with CIA front companies landed at Szymany airport,' it said in a statement. 'Five of them came to Poland with passengers, but at the time of departure only crew was present on board. The last plane noted flew to Szymany empty, and left Poland with five people on board,' it said. Polish authorities have rejected claims in media reports and a Council of Europe investigation that Warsaw allowed the US intelligence agency to run a secret interrogation facility for captured Al-Qaeda suspects in northern Poland from 2003 to 2005. The Helsinki Foundation for Human Rights identified the planes as N63MU, N379P, N313P and N8213G. It said Poland had not given this information to an investigation led by Council of Europe commissioner Dick Marty into the allegations about the interrogation facility, or the European Parliament. 'This demonstrates the lack of good will of the Polish government to cooperate with international bodies in order to explain allegations that Poland violated human rights by using, inter alia, torture,' said board member Adam Bodnar. In a report released in June 2007, Marty said the alleged prison was part of a 'global spider's web' of detentions and illegal transfers spun out around the world by Washington and its allies after the attacks of September 11, 2001 on the United States. Marty also claimed that Romania had hosted a similar facility, but authorities there have also denied the charge. In February the Helsinki Foundation said it had obtained official Polish flight records indicating that CIA planes transporting terrorism suspects landed in Poland in 2003 at least six times, revealing 'details of a cover-up by US and Polish authorities.' In 2008 Polish prosecutors launched an investigation into the claims of a secret CIA jail for suspected Al-Qaeda kingpins, including the alleged mastermind of the 2001 terror attacks, Khaled Sheikh Mohammed. The investigation is continuing. 