According to a report in the DNA, Rajan received a mail to his official account threatening to eliminate him.
Though the full text of the mail is not known, according to the DNA report the mail reads: "I have been given money by somebody to eliminate you. If you pay me more than I have been paid, then we can decide on it."
According to Mumbai Police, the email was sent by the ID firstname.lastname@example.org. Since the email id bears the name of the dreaded terrosist group ISIS, police officials are not taking this matter lightly.
Meanwhile the Cyber Crime Investigation Cell has launched a probe into the matter.