NL Corresspondent Jammu, Nov 01: The 11th District Jammu Ju-Jitsu Championship concluded with around 300 participants taking part in the competition which was organised by Ju-Jitsu Association of J&K (JJAJK) at Indoor Sports Complex, Bhagwati Nagar, here. The participating athletes represented 24 different schools and clubs of the district, a handout issued by the Association