The Polish government has come under pressure to clarify whether it has purchased sophisticated and potentially illegal phone surveillance technology that has been used to stifle dissent in other countries, AP reported.

Opposition lawmakers asked Prime Minister Mateusz Morawiecki whether the special services bought Pegasus, the spyware produced by Israeli company called NSO Group. Morawiecki said “everything that needs to be, will be clarified in due time.”

The parliamentary discussion on Wednesday follows an investigative report by private broadcaster TVN which indicated that the country’s Anti-Corruption Bureau might have bought the system.

MPs expressed concerns that the technology could be used against independent journalists or opposition politicians.