Poland's ruling party PO will under no conditions form a coalition with main opposition party PiS, head of PO parliamentary club Grzegorz Schetyna said.

Schetyna referred to suggestions that PiS may aim at building an alliance with 'a part of PO' in the next parliament term made by PiS head Jarosław Kaczynski in an interview for the daily Rzeczpospolita.

PiS would wish for coalition with a part of ruling party PO in the new parliament, while seeing no chances for alliance with leftist party SLD, Kaczynski told the daily on Thursday.