"We announced the reclaiming of (the town of) Goniri today," defence spokesman Chris Olukolade said on his Twitter account @GENOlukolade. "That was the last stronghold of terrorists in Yobe... #YobeIsFree."
Olukolade added in a later tweet that Nigerian troops had also ousted the insurgents from Bama, some 70 kilometres (45 miles) from the Borno state capital of Maiduguri.