"Secretary-General of the UN will be heading to Johannesburg, South Africa, to attend the 15th summit of the BRICS," Dujarric told reporters, adding that Guterres will leave New York on Tuesday evening.
"He will deliver a clear message that in a fracturing world overwhelmed by crisis, there is no credible alternative to cooperation," the spokesperson added.
When asked about the BRICS expansion, Dujarric stressed that it is up to the group to decide who becomes a member.
The BRICS summit will take place in Johannesburg from Tuesday to Thursday.