Accident compensation for minor injury

Sir i need urgent legal help from your side My name is raju,I'm directly saying the incident My sister's husband while coming on the road after joining his children in residential school near by town accidentally hit a person who was at roadside he was coming from his farm field,the accident took place on 5th february 2018 evening 6:30 pm.Both are drunk partially at that time but they are not accepting,both were taken to hospital immediately from the spot the victims ankle bone broken and nothing happened to him like injuries,blood loss,bruises except one broken leg.My brother in law also suffered multiple injuries on face,foot,shoulder leg with blood loss. The victim admitted in a private hospital and treated under the" AROGYA SREE" govt of TELANGANA (free of cost). Now both are cured and people from our side went and met him to check his health status,there we shocked to know that he is demanding 2 lakhs rupees as compensation but we are not in a position to pay that much money.The case has been registered in local police station the si of the station reminded my brother in law about the case but we are unaware of the legal proceedings like is it criminally a punishable case for imprisonment or shall we liable for any compensation for the victim. Please make me know all the details Thanking you sir Replying eagerly for your reply