Seven Manchester United fans have been killed while watching their team play on television.
The group in Nigeria were electrocuted while viewing Jose Mourinho's side play Anderlecht on Thursday night.
A transformer had exploded, sending a high-powered electricity line onto the building where they were gathered.
Another 11 people were injured in the incident, which happened in the Nigerian coastal city of Calabar, according to Cross River state police spokeswoman Irene Ugbo.
Witnesses have said 80 people were inside the building at the time and so it is feared the number of dead may increase.
The Port Harcourt Electricity Distribution Company did not comment but has previously said it is illegal to build structures under high-tension cables.
State governor Ben Ayade said: "It was heart-wrenching that the lives of the young men were lost through electrocution."
Nigeria's president Muhammadu Buhari sent his condolences to families of the victims.
Manchester United used its official Twitter account to write: "Our thoughts go out to the United fans, their friends and families affected by the tragedy in Calabar, Nigeria."
FIFA tweeted that it was "deeply saddened by the deaths of several football fans in Calabar and offer our deepest condolences to family & friends of the victims".