The demonstrators, who had gathered outside the Petronas Twin Towers, the second largest building in the world, were beaten and dragged into trucks by the police, witnesses said.
The rally call had been given by Hindu Rights Action Force (Hindraf), a non-governmental agency, which has held the British Government responsible for bringing Indians to the then Malaya as "indentured labourers and exploiting them". It has claimed a compensation of $4 trillion.
The Government had warned of stiff action if the protesters went ahead with their plans to assemble before the British High Commission at Jalan Ampang here to present a memorandum signed by over 100,000 ethnic Indians.
Malaysian Prime Minister Abdullah Badawi on Saturday said street demonstrations were not the way for people to voice their grouses.