When Sri Lanka Mirror raised the matter, he said he had never spoken to FCID officials regarding the matter.
The investigation is into the handover of the implementation of the lottery to raise funds for the Mahapola fund, to Oceanic Games (Pvt.) Ltd., owned by Malaysian Dato Tiyong Tin Singh.
A businessman by the name Rizley Illayas, reported to be linked the deal, has also been questioned.
Mustafa said Illayas had previously served him, but was now having a close connection with another minister.
Illayas is said to be a person who had been very close to the Rajapaksas during the previous regime and committed various illegal rackets.