It's unlikely you will get access to these tapes, although there is no harm in filing a Right to Know Request and trying.

Under the Right to Know Law, an agency is permitted to withhold records related to a criminal investigation, even after the case is closed. Here is the language of the law, which says the following may be withheld from public disclosure:

(16) A record of an agency relating to or resulting in a criminal investigation, including:

(i) Complaints of potential criminal conduct other than a private criminal complaint.

(ii) Investigative materials, notes, correspondence, videos and reports.

(iii) A record that includes the identity of a confidential source or the identity of a suspect who has not been charged with an offense to whom confidentiality has been promised.

(iv) A record that includes information made confidential by law or court order.

(v) Victim information, including any information that would jeopardize the safety of the victim.

(vi) A record that, if disclosed, would do any of the following:

(A) Reveal the institution, progress or result of a criminal investigation, except the filing of criminal charges.

(B) Deprive a person of the right to a fair trial or an impartial adjudication.

(C) Impair the ability to locate a defendant or codefendant.

(D) Hinder an agency's ability to secure an arrest, prosecution or conviction.

(E) Endanger the life or physical safety of an individual.