Section 91. Responsibility and Liability of Law Enforcement Agencies and Other Government Officials and Employees in Testing as Prosecution Witnesses in Dangerous Drugs Cases. — Any member of law enforcement agencies or any other government official and employee who, after due notice, fails or refuses intentionally or negligently, to appear as a witness for the prosecution in any proceedings, involving violations of this Act, without any valid reason, shall be punished with imprisonment of not less than twelve (12) years and one (1) day to twenty (20) years and a fine of not less than Five hundred thousand pesos (P500,000.00), in addition to the administrative liability he/she may be meted out by his/her immediate superior and/or appropriate body.

The immediate superior of the member of the law enforcement agency or any other government employee mentioned in the preceding paragraph shall be penalized with imprisonment of not less than two (2) months and one (1) day but not more than six (6) years and a fine of not less than Ten thousand pesos (P10,000.00) but not more than Fifty thousand pesos (P50,000.00) and in addition, perpetual absolute disqualification from public office if despite due notice to them and to the witness concerned, the former does not exert reasonable effort to present the latter to the court.

The member of the law enforcement agency or any other government employee mentioned in the preceding paragraphs shall not be transferred or re-assigned to any other government office located in another territorial jurisdiction during the pendency of the case in court. However, the concerned member of the law enforcement agency or government employee may be transferred or re-assigned for compelling reasons: Provided, That his/her immediate superior shall notify the court where the case is pending of the order to transfer or re-assign, within twenty-four (24) hours from its approval: Provided, further, That his/her immediate superior shall be penalized with imprisonment of not less than two (2) months and one (1) day but not more than six (6) years and a fine of not less than Ten thousand pesos (P10,000.00) but not more than Fifty thousand pesos (P50,000.00) and in addition, perpetual absolute disqualification from public office, should he/she fail to notify the court of such order to transfer or re-assign.

Prosecution and punishment under this Section shall be without prejudice to any liability for violation of any existing law.