Three men who were roughed up last night in posh South Delhi, allegedly by activists of an animal rights group, were arrested and later released by the Delhi Police today. Police say the men had been cruel to the buffaloes they were taking for slaughter from Haryana's Gurgaon to Ghazipur Mandi in Ghaziabad. That was the accusation of the activists, who had been involved in the late-night drama.