A former Fiji foreign secretary says he's shocked but not surprised at the sudden departure of the country's chief climate negotiator midway through her term.
Robin Nair says it's out of character for Nazhat Shameem Khan to abandon something she was committed to.
The circumstances of Ms Shameem Khan's departure are unclear.
The Fiji government said in a statement she would focus on her duties as the country's permanent representative to the UN in Geneva.
Ms Shameem Khan's climate role included formal negotiations as part of Fiji's year long presidency of the current UN climate round, the 23rd annual Conference of Parties, or COP23.
She has declined to comment publicly on the circumstances of her departure and the Fiji government did not respond to RNZ Pacific's requests for comment.
But Robin Nair told Dominic Godfrey it was work she believed in.