tirunelveli angry with his sister for marrying someone outside their caste a man stabbed her inside the police station during inquiry between the families on friday his sisters husband also suffered injuries when he came to the rescue of his wife fortunately both of them escaped with minor injuries and are undergoing treatment in hospitalthe pettai police in the city arrested the accused identified as s ramkumar elder brother of s ramya 21 they also picked up his family members for questioning police said that ramya was in a relationship with m anantharaj 25 of kodeeswaran nagar in the town since he belonged to another caste ramyas family was against the relationship so she eloped with him and the duo got marriedfearing threat from her family the couple went to the pettai police station on friday afternoon and sought protection when the police were inquiring the couple and their families ramkumar stabbed his sister with a knife