Principal loss on corporate fd -- how to claim loss in itr

Dear Seniors,

Kindly assist me with the following Query. 

1)  Made a company  FD  ( Avon group )  for  1 years ( Apr-2012 maturity ) , another for  2 years ( Jun-2013 maturity )

2)   AVON company customer support has been delaying the payment of prinicipal, and the interest for the  1-year FD, now delayed for 1-year now.

How could I in this case claim a loss of Principal amount, and show it in the ITR to  atleast reduce little bit my tax liability ?

Thanking you in advance,

V Chir