"Walesa could have been a controlled puppet, and we need to clarify this," Waszczykowski told the TVN 24 channel.
"I am looking forward to the publication of these documents. I hope that it will undoubtedly shed light on the situation. It concerns not only Walesa, but also reflects the way independent Poland was developing. This case may show that the project of ‘free Poland’ was manageable, and we did not carry out a revolution and did not make sovereign decisions," Waszczykowski stressed.
Walesa was assigned the codename "Bolek" and was paid for his services to the country’s Communist authorities, according to IPN. Later, he actively campaigned against the regime and served as president of the Polish state from 1990 to 1995.
The documents were reportedly seized on Tuesday from the widow of former interior minister Czeslaw Kiszczak, who wanted to sell the papers to IPN. Prosecutors retrieved them the same day due to a law on important historic documents.
Poland’s former president, meanwhile, denied on Thursday having worked as a paid informant for Communist secret services in the 1970s.