Customs officers yesterday mounted one of their biggest operations against pirated VCDs. The raids followed complaints from a delegation of Japanese programme-makers visiting Hong Kong. One hundred and fifty uniformed and plain-clothes officers swooped on 26 shops on three floors of the Sino Centre in Nathan Road, Mongkok. They seized an estimated 200,000 pirated Japanese dramas and cartoon discs worth about $2 million. Twenty-four men and five women, aged between 17 and 55, were arrested. A Customs spokesman said it was the first time raids had targeted pirated Japanese shows. Representatives from four Japanese TV stations met officers from the Intellectual Property Investigation Bureau in an effort to combat the growing trend of pirating popular series. Assistant Commissioner of Customs and Excise Vincent Poon Yeung-kwong said raids depended on copyright details being settled.