Sezibera was optimistic that the verbal clashes between Tanzanian President Jakaya Kikwete and Rwandan President Paul Kagame won't harm the community and is to be resolved diplomatically.
Without divulging details, the secretary general said the EAC has been working on the matter very closely to
"So, people of East Africa should remain calm as the matter won' t break the trading bloc," Sezibera said when addressing journalists at the EAC headquarters in Arusha.
Relations between the two countries started to deteriorate soon after Kikwete made a suggestion to the Rwandan government to hold talks with the Democratic Forces for the Liberation of Rwanda (FDLR).
During a meeting on the sidelines of the African Union summit in Addis Ababa in May, Kikwete urged his Rwandan and Ugandan counterparts to talk to the "negative forces" operating in the jungles of eastern DR Congo to help the region achieve permanent peace.
His suggestion angered Kigali, to the extent that Rwanda accused the Tanzanian leader of expressing sympathy for the forces responsible for the 1994 genocide. Rwandan Foreign Affairs Minister Louise Mushikiwabo said it was "shocking" for any leader to suggest that the government hold talks with the rebels.