(a) A search warrant relating to offenses involving controlled substances may be served at any time of the day or night if the judge issuing the warrant is satisfied that there is probable cause to believe that grounds exist for the warrant and for its service at such time.
(b) Any officer authorized to execute a search warrant relating to offenses involving controlled substances the penalty for which is imprisonment for more than one year may, without notice of his authority and purpose, break open an outer or inner door or window of a building, or any part of the building, or anything therein, if the judge issuing the warrant (1) is satisfied that there is probable cause to believe that (A) the property sought may and, if such notice is given, will be easily and quickly destroyed or disposed of, or (B) the giving of such notice will immediately endanger the life or safety of the executing officer or another person, and (2) has included in the warrant a direction that the officer executing it shall not be required to give such notice. Any officer acting under such warrant shall, as soon as practicable after entering the premises, identify himself and give the reasons and authority for his entrance upon the premises.