FIFA have given Caribbean officials 48 hours to explain their roles in a meeting with former presidential candidate Mohamed Bin Hammam.
24 Caribbean Football Union associations attended the meeting in question in May, where Bin Hammam spoke about his campaign to become FIFA president.
Last month, nine associations said that they were given or offered cash gifts. The other 15 denied receiving gifts or refused to meet investigators.
"Any person who has relevant information but does not come forward during this 48-hour period will be subject to the full range of sanctions,” FIFA announced in a statement.
Bin Hammam was banned from football for life on Saturday after he was found guilty of trying to buy votes for his unsuccessful FIFA presidency campaign.