Benjamin shall ravin as a wolf: in the morning he shall devour the prey, and at night he shall divide the spoil. – Gen. 49:27
And of Benjamin he said, The beloved of the LORD shall dwell in safety by him; and the LORD shall cover him all the day long, and he shall dwell between his shoulders. –Deut. 33:12
Benjamin, the baby of all the Tribes held tight to two tribes; full brother Joseph (Ephraim and Manasseh) and big half-brother Judah. The Southern Kingdom of Judah consisted of Judah, Levi and a smattering of Benjamin and their tribal territory in the allotment within the Promised Land under Joshua was smack dab between Judah, Dan, Ephraim, Manasseh as well as Gad and Reuben. So when Assyria took away the 10 tribes into captivity, part of Benjamin went with them while others were able to escape and take refuge into the Southern Kingdom of Judah, that is until the Babylonians came and took away Judah and Levi into captivity and the Benjamites who escaped the Assyrians were nabbed by the Babylonians.
Seeing as Judah likely resides among the Igbo as well as Manasseh and seeing as Benjamin had a close relationship with these tribes it is conceivable to find Benjamin among the Igbo.
In Scripture Benjamin was known as a small yet fiercely tenacious Tribe (Judges 19-21) of warriors. Their Tribal symbol is the Wolf who hunts in small packs. Based on the clues of the Jacobic and Mosaic prophetic blessings concerning Benjamin and the uncanny similarities in people and culture, some believe many of Benjamin who were not scattered among other Israeli Tribes, ended up in Norway and became part of the Vikings.