A man was attacked by his brother-in-law late on Friday following a dispute over his inter-caste marriage. An attempt-to-murder case was registered at Yerawada police station. Police said suspect Nitin Kadam's sister married Alok Kamble of Ambedkar Nagar colony in Yerawada about two-and-a-half months ago. The Kadam family was not happy with the inter-caste marriage but Kamble went against their wishes and married Kadamís sister. This led to a dispute between Kamble and Kadam. Police said on Friday angry Kadam allegedly attacked Kamble at Ambedkar Nagar with a sharp weapon around 7 pm. Kamble was injured and rushed to a hospital.