Illegal demolition of commercial building

I am an overseas pakistani. And i am a co-owner of a commercial vacant property in pechs near tariq road, karachi. Few years back mr. Aq contacted other co-owners to buy our property. He did not made any sale deed or gave me any payment. Last year, he has demolished our building and started constructing a new one on our plot and also sub-letting the new shops to other people. What options do i have to deal with this situation?

For Free Legal advice. CONTACT at 03005334502