A multi-millionaire from Kerala has been convicted of killing a security guard by driving his Hummer into him in a fit of rage about a year ago. Mohammed Nisham, "the beedi king" of Kerala, rammed his SUV into 51-year-old Chandrabose, pinned him to a wall, dragged him for 700 metres, stomped on him and then shouted "this dog will not die", a judge was told today.