G.R. No. 128096. January 20, 1999.* PANFILO M. LACSON, petitioner, vs. THE EXECUTIVE SECRETARY, THE SANDIGANBAYAN, OFFICE OF THE SPECIAL PROSECUTOR, THE DEPARTMENT OF JUSTICE, MYRNA ABALORA, NENITA ALAP-AP, IMELDA PANCHO MONTERO, and THE PEOPLE OF THE PHILIPPINES, respondents. ROMEO M. ACOP and FRANCISCO G. ZUBIA, JR., petitioners-intervenors. Ponente: MARTINEZ, J.: Nature of the case: The constitutionality of Sections 4 and 7 of Republic Act No. 8249 — an act which further defines the jurisdiction of the Sandiganbayan — is being challenged in this petition for prohibition and mandamus. Petitioner Panfilo Lacson, joined by petitioners-intervenors Romeo Acop and Francisco Zubia, Jr., also seeks to prevent the Sandiganbayan from proceedings with the trial of Criminal Cases Nos. 23047-23057 (for multiple murder) against them on the ground of lack of jurisdiction. Facts: In May 1995, eleven members of the Kuratong Baleleng gang were killed by elements of the Anti-Bank Robbery and Intellige...
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