Updated

LONDON (Reuters) - Britain's Andy Murray has withdrawn from the Swiss Indoors tournament in Basel because of a "right gluteal strain," organisers said Wednesday.

World number three Murray was a late wildcard entry into the event and was seeded second.

Murray has already qualified for the end of season World Tour Finals, featuring the top eight players in the world, which start in London on November 20.

(Writing by Justin Palmer, editing by Ken Ferris)