Spanish fashion giant Inditex on Wednesday denied claims it had failed to meet strict customs and labelling laws in Mexico after officials there launched an investigation into the origin of its shipments.

The company behind brands such as Zara and Bershka said exports to the Latin American country have been hit with a provisional 35 per cent duty instead of the standard five per cent while the probe is carried out.

Mexican newspaper Cinco Dias said the customs investigation will try and find out if the imports of apparel made in Spain actually came from Asia. It added the probe could last almost a year.

Inditex makes around 80 per cent of its apparel in Europe with around 20 per cent produced in Asia. It enjoys annual sales of around 300 million euros in Mexico.