Can brothers Claim share in another brother's property

Dear Sir, My father died in year 1998. We have 3 brothers, 1 sister & Mother. My Father had some Cash certificates & money in different bank accounts. We apply for Succession Certificate, in respect of the debts & Securities left behind by the deceased Father. Each one of us get there Share as per court of law. I deposit my Share in the Bank to get interest, and there was some more cash certificates in my in the Bank. In the year 2006, I withdraw all my cash certificates and buy a Land which is in my name. Now in 2018, we are going to divide the property of our deceased Father Which is Land in different places and House. Now my brothers claim that the Land you buy in 2006, which is in my name, we have a share in that land. Sir I want to know can my brothers claim in that Land which I buy in the year 2006 & and it’s registration is in my name. Thank you