Om Prakash Srivastava

I was looking for a movie where in a professor planned for thirty years ,got in touch with an employee of a company dealing in diamonds. He contacted a professional criminal for the job who in turn roped in criminals to do the heist. Ultimately, prof.'splan succeeded. However, when professor and employee were enjoying the looted diamonds, on aside restaurants,,two persons came on a bike lifted the bag with diamonds and vanisded in a seconds I don't know the name of the movie.