A Turkish boxing referee due to officiate at the Olympics has been found dead in his London hotel room after suffering a suspected heart attack, authorities said on Friday.

The Turkish Boxing Federation said Garip Erkuyumcu, 73, died overnight Thursday. Police in London were awaiting the results of an autopsy.

Erkuyumcu was a member of the International Amateur Boxing Association (AIBA) referees commission and was due to assist during the Olympic boxing tournament.