Fathers property sale right

Hi all, I want opinion on my legal position and right to have my share in my fathers property. My father bought a plot in a government project that is IDA (Indore development authority) on the year 2006. He passes away in the year 2007. I moved to USA in the year 2008.There are four legal heirs in my fathers family, my mother( fathers wife), me(elder son), my brother(younger son) & my sister(daughter). I just want to know can they sell or transfer this plot to anybody without my consent. If yes then is there any way to stop this. I have some clue that my brother and sister want to take advantage of me being abroad. Any sujjestions or advise is welcome. Jeetendra