A cewar rahoton masana a cibiyar Clingendael, kungiyoyin masu tsattsauran ra’ayin da aka yi ittifakin suna da alaka da al-qaeda suka rika tsallakowa daga yankin arewacin jamhuriyar Benin sun samu mafaka a gandun dajin gwamnati dake Kainji, daya daga cikin mafiya girma a Najeriya.