LANRE OLA TEN people who had been held captive by Islamist militants were freed this week in northeast Nigeria's Borno state, three security sources and two close associates of those released told Reuters. The people, including aid workers, had been taken by Boko Haram over the past year, the sources said. They were released at around noon (1100 GMT) on Monday and were taken to a hospital in Borno state capital Maiduguri. The sources said the Islamic State West Africa Province (ISWAP), a rival militant group to Boko Haram, had released the hostages after finding them in a Boko Haram…