The CBI says that it has proof that one of the most senior officials in the Intelligence Bureau was involved in the fake encounter of 19-year-old college student Ishrat Jahan, who was killed in Gujarat in 2004. "We have evidence that will stand legal scrutiny," CBI Director Ranjit Sinha told NDTV today about Rajendra Kumar, currently Special Director with the Intelligence Bureau. He is scheduled to retire next month.