Witnesses to the killings said a man ran into the crowd detonating a bomb before anyone could stop him.
The Nigerian and Polish governments are still waiting for the hostage takers to make contact.
Nwakali was crowned the best player in the recent competition.
Teachers and parents in Borno State complain of low salaries and corruption.
A suicide bomb attack has killed at least 10 people near the Cameroon-Nigeria border.
A deadly explosion at a fruit and vegetable market in Yola has killed 32 and wounded 80 people.
According to a report, deaths due to acts of terrorism increased by 80% in 2014.
Six days of protests could turn violent if the Ipob leader is not released says activist.
Lamorde was appointed EFCC head in 2011 and has now been replaced by interim chairman Ibrahim Mustafa Magu.
Islamists were killed as they scrambled to defend a newly installed base on the border with Burkina Faso.
192 children, 138 women and 8 men rescued from Boko Haram in Nigeria.
A bomb exploded at a new mosque in Yola just hours after a bomb blast ripped through a Maiduguri mosque.
Suspicion likely to fall on Boko Haram who carry out attacks in north-eastern Nigeria.
Large group of gunmen attack unarmed civilians outside Jingalta village in Borno state.
The attack comes in the wake of the Nigerian Army's final ultimatum to Boko Haram militants to surrender.
Kanu is the leader of separatist movement Ipob and director of London-based Radio Biafra.
US personnel will conduct airborne intelligence, surveillance and reconnaissance operations.
Maiduguri is the epicentre of Boko haram's insurgency and is attacked on an almost weekly basis.
Rights group wants to send clear message of solidarity to victims of human rights violations in Nigeria.
Around 41 people were injured as bombs went off in multiple attacks in the federal capital.
BREAKING: National Crime Agency confirms five arrests for suspected bribery and money laundering.
Nigeria celebrates 55 years of independence but is still one of the world's worst places for LGBT rights.