Avon and Somerset Police wrote on their Glastonbury-related Twitter account:
Unfortunately the man taken ill after a suspected reaction to ketamine has died this morning. His family are aware and being supported.
More top news
The shocking video of Laquan McDonald being killed brings the debate about racism in the US criminal justice system centre stage once more.
A video of a white police officer shooting dead a black teenager has been released by authorities in Chicago.
Cold in the wind