Another 11 people were injured, one of them critically, injured in the coastal city of Calabar, an officer added.
Jose Mourinho blasts 'sloppy' Manchester United
A transformer exploded, sending a high-tension power wire falling onto the building's roof during the broadcast of the Europa League quarter final, Tony Ine, a local resident who was walking past at the time, told Reuters.
President Muhammadu Buhari sent his condolences on Friday, as did Manchester United on its Twitter account.
Mourinho hails Shaw after ‘solid’ performance
"Our thoughts go out to the United fans, their friends and families affected by the tragedy in Calabar, Nigeria," the club wrote.
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