A lawyer for Osama bin Laden's three widows and his nine children says the family is expected to be deported from Pakistan to Saudi Arabia later on Wednesday.
Mohammad Amir Khalil said the family was unable to leave overnight on Tuesday as planned because the brother of bin Laden's youngest wife, Amal Ahmed Abdel-Fatah al-Sada, was not in possession of his passport.
Zakaria al-Sada has been in Pakistan campaigning for his sister Amal's release.
Khalil said his passport was currently being held by a Pakistani court, but it was expected to be released later Wednesday.
He said the family would then likely leave for Saudi Arabia.
The family has been in Pakistani detention since the US raid that killed bin Laden almost a year ago.