Ramesh Gujjar (30) was shot dead and his brother Prahalad sustained injuries in the incident last evening, Deputy Superintend of Police Bhanwar Singh Shekhawat said.
Phralad was last night referred to Maharao Bhim Singh Hospital in Kota in a critical condition, he said.
Four members of a family - Sonu, Monu, Lakhvinder Singh and Seva Singh - of the village were named in a complaint filed with police, he said.
A case under sections 302 (murder) and 307 (attempt to murder) of the IPC and also under Arms Act have been lodged against the accused.