Who is responsible for replacing the pole that your electric panel is

My friend has a ancestral agricultural land in Indore. His cousin had a land in just side of my friends land, which the cousin sold to someone. The new owner created boundary by burying poles without permission of tehsil and information to my friend.My friend argued him but he didn't back step. My friend complaint it to both tahsil and thana but no action was taken . Simaankan was not done too by the new owner. Now my friend broke some of poles which were buried in his portion of land by new owner.someone made video of it in mobile Now new owner went to thana against my friend and gave application. Police told new owner to go to revenue department and let tehsil dar to make simankan. But before simankan could happen the new owner sold land to someone else. Now what is liability of my friend in this matter . Does he has to worry about the broken poles of previous owner as ownership changed now Plz suggest me all the wise experts.