"We were detained unlawfully," he said, adding that police had freed most of the protestors Sunday but were still holding 28 in the southern Negeri Sembilan state.
Jayathas said the arrests will not deter Hindraf from organising a February 27 rally outside the iconic Petronas Twin Towers to demand the textbook is dropped from the curriculum.
A police spokesman told AFP that 59 people were arrested for taking part in an illegal assembly and all had been released on Sunday.
The book is now compulsory reading for high school students in multiracial but predominantly Muslim Malaysia.
The Malay-language novel has prompted angry protests from elements of the nation's Indian community, who say it is offensive.
Deputy Prime Minister Muhyiddin Yassin last month moved to end the row, saying the book will be used in schools but with amendments so as not to hurt the feelings of the Indian community.
But the controversy stirred by the book points to the country's strained race relations.
"Interlok", written by a national laureate, covers the history of relations between Malaysia's three main ethnic groups -- Malays, Chinese and Indians -- from the 1900s until independence in 1957.
The Malaysian Indian Congress party, the third largest component party in the ruling coalition, has called for the novel to be withdrawn or to remove the passages touching on the caste system and other areas deemed offensive.
The caste system divides Hindus into four main groups according to their work and social status and is banned in India but still pervades many aspects of daily life, especially outside the cities.
Ethnic Indians make up less than 10 percent of Malaysia's 28 million population and have long complained that they are disadvantaged by policies helping majority Muslim Malays.
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Jayathas said the arrests will not deter Hindraf from organising a February 27 rally outside the iconic Petronas Twin Towers to demand the textbook is dropped from the curriculum.
A police spokesman told AFP that 59 people were arrested for taking part in an illegal assembly and all had been released on Sunday.
The book is now compulsory reading for high school students in multiracial but predominantly Muslim Malaysia.
The Malay-language novel has prompted angry protests from elements of the nation's Indian community, who say it is offensive.
Deputy Prime Minister Muhyiddin Yassin last month moved to end the row, saying the book will be used in schools but with amendments so as not to hurt the feelings of the Indian community.
But the controversy stirred by the book points to the country's strained race relations.
"Interlok", written by a national laureate, covers the history of relations between Malaysia's three main ethnic groups -- Malays, Chinese and Indians -- from the 1900s until independence in 1957.
The Malaysian Indian Congress party, the third largest component party in the ruling coalition, has called for the novel to be withdrawn or to remove the passages touching on the caste system and other areas deemed offensive.
The caste system divides Hindus into four main groups according to their work and social status and is banned in India but still pervades many aspects of daily life, especially outside the cities.
Ethnic Indians make up less than 10 percent of Malaysia's 28 million population and have long complained that they are disadvantaged by policies helping majority Muslim Malays.
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