Maryland Criminal Procedure Section 2-208.1
§ 2-208.1.
  (a)   In this section, "Montgomery County fire and explosive investigator" means an individual who:
    (1)   is assigned to the fire and explosive investigations section of the Montgomery County Fire Marshal's Office; and
    (2)   (i)   has the rank of a fire rescue lieutenant or higher; and
      (ii)   has successfully completed a training program from a police training school approved by the Police Training Commission established under Title 3, Subtitle 2 of the Public Safety Article.
  (b)   Except as provided in subsection (c) of this section, a Montgomery County fire and explosive investigator has the same authority granted to the State Fire Marshal or a full-time investigative and inspection assistant of the Office of the State Fire Marshal under § 2-208 of this subtitle:
    (1)   while operating in Montgomery County; and
    (2)   while operating outside Montgomery County when:
      (i)   the Montgomery County fire and explosive investigator is participating in a joint investigation with officials from another state, federal, or local law enforcement unit, at least one of which has local jurisdiction;
      (ii)   the Montgomery County fire and explosive investigator is rendering assistance to another law enforcement officer;
      (iii)   the Montgomery County fire and explosive investigator is acting at the request of a law enforcement officer or State law enforcement officer; or
      (iv)   an emergency exists.
  (c)   The Montgomery County Fire Administrator:
    (1)   may limit the authority of a Montgomery County fire and explosive investigator under this section; and
    (2)   shall express the limitation in a written policy.