Kripashankar has written to the Sena chief offering to exchange properties.

"Balasaheb, you and your newspaper are publishing unsubstantiated facts about me and my family's property. Whatever properties you allege that I own, you are free to take. Whatever properties you and your family members actually own, please give those to me in return," Singh's letter said.

Singh has also threatened Thackeray with a civil suit to claim compensation of Rs 10 crore, spokesperson of Mumbai Congress Kishore Joshi said.

'Saamana' has been publishing a series of articles against Singh, disclosing the details of his alleged movable and immovable property and alleged irregularities committed by him.