Bangkok, July 17: In a fresh boost to the Naga peace process, the Centre and major insurgent group NSCN (I-M) today decided to extend the ceasefire in Nagaland by a year beyond July 31. "We had very good but tough discussions. Both sides have agreed to extend the ceasefire by another year," Centre's emissary K Padmanabhaiah said after holding three days of talks with NSCN (I-M) general secretary T Muivah and eight other senior members of the outfit here. Bureau Report