The Pacific Concerns Resource Centre, or PCRC, says it is not a good idea for Fiji's interim prime minister, Commodore Frank Bainimarama, to attend the Forum Leaders summit later this year.
Fiji remains a full member of the Forum and its representative, who led the coup, cannot be prevented from attending.
The country does not have to rely on an invitation and the Forum Secretariat has made it clear that it is not up to the other members to determine who can or can't go.
The PCRC's director, Tupou Vere, says as far as they're concerned, at this point, Fiji should not participate in a meeting where all the other leaders present, were elected.
"Fiji has undermined, or gone against the principles and for that, we don't think it would be very good for Fiji, under the interim cabinet leadership, to be participating in a Pacific Forum leaders meeting."