1) Land is agricultural land. The document referred by us at Tehsil was the "Farad"", issued by tehsil on the date of agreement .In farad names of the seller(s) were given ; this being a family property passed on to son(s) from father. The 'farad does not contain any mention of loans, however we have personally checked with banks and found that loans have been taken ( mainly kisan credit cards and farm equipment loans etc.). As revenue record (copies) issued from the tehsil is the only document in this case, banks provide these loans by creating mortgage on basis on "farad" only, by pasting revenue stamps on it.
In the given situation, this may not be a serious problem regarding title, however the mortgagor is liable to repay the loan amount even after selling the landed property, an indemnity bond can be obtained from the vendor to this effect.
2) We had checked the location before entering into agreement. In the registered agreement the seller given only partial information ,i.e. he mentioned one of the land boundaries where he had shown us the land.But at "shown"location only approx. 20% of the land is available, rest is almost 5-6 km from that place, which was never under discussion..
If the total extent of the property shown to you do not come under the agreed situation then there is an intention of fraud to suppress the information material to the said purchase, therefore it can be said as defective.
3) This also seems to be a case of complicity of lower level revenue department people who cooperated with seller in concealing the loan related information from being recorded in department documents ( farad etc.)
If you are suspecting mischiefs involving the people in power it would be better to avoid proceeding ahead to avoid litigation in future.
4) I had sent a legal notice at address given in agreement and also on physical address inspected by us, notices were returned , NOT received.
Secure them as evidence and file a suit based on the said evidences and try to get an exparte order favoring you to execute the issue.