Burundian President Pierre Nkurunziza said Thursday he would not run for another term shortly after he signed into law a new constitution that could enable him to rule until 2034.

 In this file photo taken on June 4, 2014 Burundian President Pierre Nkurunziza poses at the Westin hotel in Paris. (AFP)

"I will not go back on my word. Our mandate ends in 2020," Nkurunziza said in a speech in front of supporters and diplomats in the central Gitega region.