The Vanuatu Daily Post reports that a date is yet to be confirmed, although provisional dates are from May 30 to June 3, depending on the availability and commitments of the Leaders.
The MSG summit had been expected to formalise the appointment of a new director-general for the sub-regional grouping's Port Vila-based secretariat.
However two MSG members, Papua New Guinea and Vanuatu, have objected to the anouncement by the MSG chair, Solomon Islands prime minister Manasseh Sogavare, that the Fiji diplomat Amena Yauvoli had been selected for the role.