Please educate me on what evidences should i provide other than general caste certificate to prove that he belongs to an upper caste .
We tried filing a case in the local police station, since he is the department he influenced people and no one would take up my case. Is there any alternative other than writ petition?
Also i need help in drafting the petition to send it to the higher officials
Let him work in the superintendent of police office or he be himself a SP, all are common before law.
Before approaching court for remedy, you should exhaust the remedies available within the department.
If the department is not taking any action on this then you may file a request letter seeking action taken on the complaint through RTI act and then with the reply you may prefer a writ petition before high court as suggested by many others.