Four people, who were caught lurking outside the official residence of Alok Verma, Director of the Central Bureau of Investigation (CBI), who has now been sent on leave, were on “routine duty”, according to sources in the Intelligence Bureau (IB). Sources said that the presence of the four men have unnecessarily been “projected otherwise.” “Since such officials are on routine duty, they carry their identity cards. This is unlike surveillance, which is done covertly, without any visible appurtenances," explained the sources.