A Muslim father is upset he isn't allowed to watch his two daughters compete at an Islamic women's netball tournament.

But organisers say it's important for the girls to have a "secure environment" to play sport.

The father, who wished to remain anonymous, has two daughters playing in today's Muslim women's netball tournament at Zayed College For Girls in Auckland.

The tournament has been running for the last 15 years or so and has always excluded men from the event. The referees and coaches at the tournament are also required to be female.

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