Mainak Sarkar, a 38-year old IIT Kharagpur alumnus, who had been working on a Ph.D at UCLA for several years, on Wednesday walked into his professor William Klug's office at University of California, Los Angeles' Henri Samueli School of Engineering, and shot him dead. He then took his own life.

On March 10 in a blog he wrote, "William Klug, UCLA professor is not the kind of person when you think of a professor. He is a very sick person. I urge every new student coming to UCLA to stay away from this guy. I was this guy's Phd student. We had personal differences. He cleverly stole all my code and gave it to another student. He made me really sick."