American girl, 12, found dead after playing American football. Four days after suffering a mild trauma in her left knee.

The girl, who has not been named, was found dead by her father di lei and his partner. Doctors now suspect she had a heart attack. ALL RIGHTS RESERVED © Copyright ANSA. All rights reserved. For confidential support call the Samaritans in the UK on 08457 90 90 90, visit a local Samaritans branch or click here.