Maryland Code, General Provisions § 4-351

(1) records of investigations conducted by the Attorney General, a State's Attorney, a municipal or county attorney, a police department, or a sheriff;

(2) an investigatory file compiled for any other law enforcement, judicial, correctional, or prosecution purpose;

(3) records that contain intelligence information or security procedures of the Attorney General, a State's Attorney, a municipal or county attorney, a police department, a State or local correctional facility, or a sheriff; or

(4) records, other than a record of a technical infraction, relating to an administrative or criminal investigation of misconduct by a police officer, including an internal affairs investigatory record, a hearing record, a record of positive community feedback, and records relating to a disciplinary decision.

(1) interfere with a valid and proper law enforcement proceeding;

(2) deprive another person of a right to a fair trial or an impartial adjudication;

(3) constitute an unwarranted invasion of personal privacy;

(4) disclose the identity of a confidential source;

(5) disclose an investigative technique or procedure;

(6) prejudice an investigation; or

(7) endanger the life or physical safety of an individual.

(1) the United States Attorney;

(2) the Attorney General;

(3) the State Prosecutor; or

(4) the State's Attorney for the jurisdiction relevant to the record.

(1) shall redact the portions of a record described in subsection (a)(4) of this section to the extent that the record reflects:

(2) may redact the portion of a record described in subsection (a)(4) of this section to the extent that the record reflects witness information other than personal contact information.