The European Court of Human Rights has rejected an appeal lodged by Poland over CIA black sites hosted in the country.

The decision will force Warsaw to move on with legal proceedings against people in Poland who allowed the jails to operate.

The Polish Foreign Ministry has already issued a statement saying that it will abide to the court’s decision.
The Strasbourg-based court ruled in July 2014 that Poland should quickly conclude a criminal investigation into the jail, and issue a total compensation of EUR 230,000 to two formers detainees of the jail.

“Poland is required to finally conduct a thorough and effective investigation, make public information concerning its role and hold those responsible to account,” Helen Duffy, the lawyer for Abu Zubaydah, one of the former detainees, said following the court’s decision on Tuesday.

The site of the Szymany airport in northern Poland was used as a secretive facility by the US Central Intelligence Agency to hold suspects for interrogation following the 9/11 attacks.