Indus script is a major undeciphered script. Several attempts have been made to decipher the script but there is no consensus about its content. The lack of definite knowledge about its structure makes it difficult to objectively evaluate any claim of decipherment. We have tried to fill this lacuna by analyzing the syntax of the script in detail. The focus of our study is to identify patterns in the Indus writing and explore its underlying logic without making any assumptions about its content. In the present talk, I will give an overview of our work on the structure of the Indus script using various techniques related to computational linguistics.