Ahmed Abdul-Rahma, spokesman for Arafat, said former Lebanese Prime Minister Rashid Karami was expected to announce details of the disengagement agreement.
A deputy police chief was shot dead in Khairpur, about 483 km north-east of Karachi, and a mob freed more than 40 people from a village jail in Larkana in Sind district, according to unofficial reports.
Islamists belonging to extremist Barelvi organisation have caused mayhem in Karachi in the name of blasphemy against Islam, setting a dangerous precedent.