DMK chief M Karunanidhi. DMK chief M Karunanidhi.

Barely hours after a Tamil Nadu court on Monday issued non-bailable arrest warrant against Durai Dayanidhi in an illegal quarrying case , DMK president M. Karunanidhi said his grandson will act legally.Karunanidhi's grandson is alleged to have gone into hiding.Speaking to reporters in Chennai on the non-bailable arrest warrant issued for Dayanidhi, the DMK chief said: "Based on lawyer's advice, he would act legally."Dayanidhi is the son of Karunanidhi's son and union Chemicals and Fertilisers Minister M.K. Alagiri.Stating that he did not know the reason for Dayanidhi going into "hiding", Karunanidhi reiterated that his grandson would move court.Dayanidhi was a director in Olympus Granite, one of the companies under the government scanner for illegal quarrying. Police are on the lookout for Dayanidhi and have alerted immigration authorities to stop him and 11 others from leaving the country.The AIADMK government started its crackdown on illegal granite quarries in the Madurai region after former Madurai collector U. Sahayam in a report estimated the losses incurred from illegal granite mining at around Rs.16,000 crore.Karunanidhi also demanded a detailed investigation by the Central Bureau of Investigation (CBI) over the allocation of granite quarries.