Henry Gomez, leader of GPDP and youth adviser to President Barrow, was Tuesday called by police investigating the on-going diplomatic passport scandal.
Confirming this to The Standard, Government spokesman Ebrima Sankareh said Gomez is among at least 16 others who have been arrested or questioned over the scandal.
He also said some arrests were made in Germany.
Throughout last week a panel of investigators has been busy trying to get to the bottom of how ineligible people get hold of Gambian diplomatic passports.
The police are looking for possible fraud and forgery.
However leaked documents have also surfaced suggesting a suspected abuse of the document even where due process was followed.
President Barrow has warned no one who is found wanting will be spared in the investigations.