How to recover money from people when cheated on the name of loans.

People told they will give loan for less interest, one of my colleague introduced a guy will give loan on basis of property document, me and my client met them. After a long conversation after a week they told client have to give 10 lakhs for getting the loan but now it is more than 1 and half years they r not returning back the given money or loan. I called my client serveral time to police station for complaining this but he didn't believed me, he had close contact with those people... After the confirmation these people are cheating him that too after 1 and half year now the client comes to me and says u r the introducer and same is been complained in the police station. Now what I should do.. pls advise