CONDEMNING the spurt in cases of murder, many of them due to caste issues, in Thirunelveli and Tuticorin districts of Tamil Nadu, CPI(M) cadres observed one day's fast on March 31. Led by Party state secretary G Ramakrishnan, more than 2,000 cadres observed the fast at Jawahar Grounds, Palayamkottai in the city of Thirunelveli.Nearly 100 brutal murders have taken place in both the districts in the past 10 months. Of these, 25 per cent were due to caste related issues.