The News Agency of Nigeria (NAN) learnt that the teenage twin boy, identified as Chinedu Ibeabuchi, slumped in a football viewing-centre when Barcelona scored their opening goal in the drawn semi-final match.
Chinedu, who lived with his mother and other family members on Marcus Garvey Street, New Haven, Enugu, was a student of a secondary school in the state capital.
A lady, who identified herself as a sister to the deceased, said the family was not willing to talk about the incident, rather, was concerned with his burial arrangements.
A source close to the family told NAN yesterday that Ibeabuchi was rushed to a nearby hospital where he was confirmed dead.
NAN also learnt that the body had been deposited at the Eastern Nigeria Medical Centre, Enugu.
It was gathered that the Ibeabuchi family lost their father sometime in 2011.
The match ended 2-2 at full-time with Chelsea advancing to the final on a 3-2 aggregate.