Maryland Code, Family Law § 5-708

Any person who makes or participates in making a report of abuse or neglect under § 5-704, § 5-705, or § 5-705.1 of this subtitle or a report of substantial risk of sexual abuse under § 5-704.1 of this subtitle or participates in an investigation or a resulting judicial proceeding shall have the immunity described under § 5-620 of the Courts and Judicial Proceedings Article from civil liability or criminal penalty.