Narcotic Drugs and Psychotropic Substances Act, 1985
68X. Service of notices and orders
Any notice or order issued or made under this Chapter shall be
served-
(a) by tendering the notice or order or sending it by registered
post to the person for whom it is intended or to his agent;
(b) if the notice or order cannot be served in the manner
provided in clause (a), by affixing it on a conspicuous place in the property
in relation to which the notice or order is issued or made or on some
conspicuous part of the premises in which the person for whom it is intended is
known to have last resided or carried on business or personally worked for
gain.