Pakistan's Supreme Court is to charge Prime Minister Yousuf Raza Gilani with contempt for failing to reopen corruption cases against the president.
The court ordered Mr Gilani to appear before it on 13 February. If convicted he faces a possible jail term and would be barred from office.
The government has refused to prosecute President Asif Ali Zardari, saying he has immunity while in office.
Mr Zardari has rejected the corruption charges as politically motivated.