The deportation of Osama bin Laden's family from Pakistan to Saudi Arabia will take at least a few more days and is being discussed between the two countries, their lawyer said Friday.

Pakistani police commandos stand guard outside the house where family members of slain Al-Qaeda chief Osama bin Laden are believed to be held in Islamabad on April 17, 2012.

The 12 were originally supposed to be deported this week but it was delayed because legal formalities were not complete.

"It will take some more days to complete the deportation process," Atif Ali Khan, the lawyer for bin Laden's widows, told AFP. "We are still waiting for news from the authorities.

"I don't want to talk about weeks but we hope that it will be over in a few days."

Deputy interior minister Imtiaz Safdar Warraich told AFP on Tuesday that "the required documents are being prepared and it is being done swiftly. It is not just an issue of deportation, but also there is an issue of acceptance".

Earlier this month, a court sentenced the three women and two of bin Laden's older daughters to 45 days' detention on charges of illegal entry and residency in Pakistan, and ordered their deportation as soon as possible.

They completed the sentence on Tuesday, counting time already served since they were formally arrested on March 3.

After fleeing Afghanistan in the wake of the attacks on Washington and New York, bin Laden moved his family around Pakistan before settling in a three-storey house inside a compound in the garrison town of Abbottabad in 2005.

His discovery on Pakistani soil dealt a massive blow to US-Pakistan relations and led to accusations of Pakistani complicity or incompetence.