Wata kotu a Afirka ta Kudu ta yanke hukumcin daurin shekaru 24 a kurkuku kan madugun tsageran Niger-delta na Najeriya, henry Okah; shugabar Kungiyar ‘Yan Sanda ta Duniya, INTERPOL, tana ziyara a Najeriya, yayin da Kungiyar dalibai ta Najeriya ta yi wata zanga-zanga a harabar majalisar dokokin kasar a Abuja.