MSPs on the Public Petitions Committee considered a new petition on 9 November 2010 calling for an independent inquiry into the conviction of the Lockerbie bomber.
The petitioner Dr Jim Swire, whose daughter Flora was killed in the Pan Am bombing, does not believe Megrahi is guilty.
Abdelbaset al-Megrahi was released from jail over a year ago on compassionate grounds, but he dropped his appeal against his conviction.
Dr Swire gave evidence, along with fellow members of the campaign group Justice For Megrahi, Robert Forrester; Professor Robert Black QC and Iain McKie.
He said "failure to institute an inquiry would perpetuate an indelible stain on the reputation and standing of the Scottish justice system at home and abroad."
He also said it was the Scottish government's responsibility to "expunge that stain."
The committee agreed to contact the Scottish Government to ask if ministers would open an inquiry into his 2001 conviction.
The committee then considered a new petition calling for improved mobile phone coverage in rural areas and quized Daphne Jackson and Councillor Veronica Davidson.
The committee also considered three further new petitions on the following issues, guidelines for initial teacher education programmes; a call for an apology from the Scottish government to the Scottish Gypsy traveller community and the corporate governance of Scottish football.