Dozens of activists and lawyers have climbed over the wall of a compound where Pakistan's deposed chief justice has been under house arrest for more than four months.

The breach came minutes after Pakistan's newly elected Prime Minister Yousaf Raza Gilani told parliament he would seek the immediate release of judges detained since President Pervez Musharraf declared a state of emergency in November.

Riot police who had previously sealed Iftikhar Mohammed Chaudhry's property stood by as intruders reached the lawn in front of his house. There was no sign of Chaudhry himself.