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ANA THERESIA “RISA” HONTIVEROS-BARAQUEL, DANIEL L. EDRALIN, VICTOR M. GONZALES, SR., JOSE APOLLO R. ADO, RENE D. SORIANO, ALLIANCE OF PROGRESSIVE LABOR, BUKLURAN NG MANGGAGAWANG PILIPINO, LAHING PILIPINO MULTI-PURPOSE TRANSPORT SERVICE COOPERATIVE, PNCC SKYWAY CORPORATION EMPLOYEES UNION (PSCEU), AND PNCC TRAFFIC MANAGEMENT & SECURITY DEPARTMENT WORKERS ORGANIZATION (PTMSDWO), PETITIONERS, VS. TOLL REGULATORY BOARD, THE SECRETARY OF THE DEPARTMENT OF TRANSPORTATION AND COMMUNICATIONS (DOTC), PNCC SKYWAY CORPORATION, PHILIPPINE NATIONAL CONSTRUCTION CORPORATION, SKYWAY O & M CORPORATION, AND CITRA METRO MANILA TOLLWAYS CORP., RESPONDENTS.

ANA THERESIA “RISA” HONTIVEROS-BARAQUEL, DANIEL L. EDRALIN, VICTOR M. GONZALES, SR., JOSE APOLLO R. ADO, RENE D. SORIANO, ALLIANCE OF PROGRESSIVE LABOR, BUKLURAN NG MANGGAGAWANG PILIPINO, LAHING PILIPINO MULTI-PURPOSE TRANSPORT SERVICE COOPERATIVE, PNCC SKYWAY CORPORATION EMPLOYEES UNION (PSCEU), AND PNCC TRAFFIC MANAGEMENT & SECURITY DEPARTMENT WORKERS ORGANIZATION (PTMSDWO), PETITIONERS, VS. TOLL REGULATORY BOARD, THE SECRETARY OF THE DEPARTMENT OF TRANSPORTATION AND COMMUNICATIONS (DOTC), PNCC SKYWAY CORPORATION, PHILIPPINE NATIONAL CONSTRUCTION CORPORATION, SKYWAY O & M CORPORATION, AND CITRA METRO MANILA TOLLWAYS CORP., RESPONDENTS.

G.R. No. 181293 | 2015-02-23

 FIRST DIVISION
 
D E C I S I O N
 
SERENO, C.J.:
 
This is an original petition for certiorari and prohibition under Rule 65 of the Rules of Court, with a prayer for the issuance of a writ of preliminary injunction and/or temporary restraining order, seeking the annulment of the following:
 
1. The Amendment to the Supplemental Toll Operation Agreement executed on 18 July 2007 between the Republic of the Philippines, the Philippine National Construction Corporation, and Citra Metro Manila Tollways Corporation;
 
2. The Memorandum dated 20 July 2007 of the Secretary of Transportation and Communications, approving the...