(a) Immunity for the individual seeking medical attention for another.--An individual shall not be prosecuted for an offense under this chapter if the individual can establish all of the following:

(1) A law enforcement officer first became aware of the individual's violation of this chapter because the individual placed a 911 call or contacted campus security, police or emergency services, based on a reasonable belief that another individual was in need of immediate medical attention to prevent death or serious bodily injury.

(2) The individual reasonably believed the individual was the first individual to make a 911 call or contact campus security, police or emergency services and report that an individual needed immediate medical attention to prevent death or serious bodily injury.

(3) The individual provided the individual's own name to the 911 operator or equivalent campus security officer, police or emergency services personnel.

(4) The individual remained with the individual needing medical assistance until a campus security officer, police or emergency services personnel arrived and the need for the individual's presence had ended.

(b) Derivative immunity for the individual needing medical attention.--An individual needing medical attention shall be immune under this section from prosecution for an offense under this chapter or section 6308(a) (relating to purchase, consumption, possession or transportation of liquor or malt or brewed beverages) only if another individual against whom probable cause exists to charge an offense under this chapter reported the incident and remained with the individual needing medical attention and the other individual qualifies for a safe harbor under this section.

(c) Limitations.--The safe harbors described under this section shall be limited as follows:

(1) This section may not bar prosecuting a person for an offense under this chapter if a law enforcement officer learns of the offense prior to and independent of the action of seeking or obtaining emergency assistance as described in subsection (a).

(2) This section shall not interfere with or prevent the investigation, arrest, charging or prosecution of an individual for a crime other than an offense under this chapter or section 6308(a).

(3) This section shall not bar the admissibility of evidence in connection with the investigation and prosecution for a crime other than an offense under this chapter or section 6308(a).

(4) This section shall not bar the admissibility of evidence in connection with the investigation and prosecution of a crime with regard to another defendant who does not independently qualify for a safe harbor under this section.

(d) Civil immunity.--In addition to any other applicable immunity or limitation on civil liability, a law enforcement officer, campus security officer or prosecuting attorney who, acting in good faith, charges a person who is thereafter determined to be entitled to immunity under this section shall not be subject to civil liability for the filing of the charges.