The Polish president's office says he plans to appoint parliament speaker Ewa Kopacz as the new prime minister on Monday and that he will swear in her new government Sept. 22.

Kopacz is to succeed Donald Tusk, who resigned as prime minster after being elected to head the European Council, an unprecedented leadership role at the European Union for an Eastern European.

President Bronislaw Komorowski met Friday morning with Kopacz, who is in the process of building the government. The biggest question centers on the fate of Foreign Minister Radek Sikorski, who has been a prominent voice on the conflict in Ukraine. Neither Sikorski nor Kopacz would reveal details of the new team on Friday.

There is speculation that Sikorski could become the new parliament speaker.