Witnesses at the Abbottabad Commission have come forward to say that the ISI would has been picking them up while traveling to and leaving the probe, often "briefing" them on what to say and grilling them afterwards on the proceedings.
Abbottabad Commission Head Justice Javed Iqbal has expressed anger at the alleged interference, describing it as meddling and establishing a committee of military officials to investigate the apparent harassment.
The matter first came to light when a witness from the neighborhood of Bin Laden's complex in Abbottabad was late for giving testimony. When the court demanded an explanation, he said that on his way to Islamabad, some ISI personnel stopped him and told him what to tell the commission.
Several other witnesses have now also alleged they were harassed by the ISI, both before and after recording their statements. The witnesses say while they wished to remain impartial in their statements, they also feared ISI reprisals.
A broader question raised by the ISI's alleged grilling of witnesses, is why the intelligence agency was seemingly so concerned with influencing its outcome.
There have been numerous reports since 9/11 claiming that the ISI helped hide Bin Laden, who was for over a decade the world's most wanted man. This was why the US special forces raid was launched without consulting Islamabad.