Demanding immediate cease fire, the Srilankan Tamils Protection Movement formed a human chain on Tuesday. Tamil Nationalist Movement Leader Nedumaran,CPI General Secretary D Pandian, PMK President G K Mani, Viduthalai Chiruthaigal Katchin Leader Thol Thirumavalavan, MDMK Treasurer M Kannappan and the PMK MLA's joined the chain at Tambaram.