The Supreme Court voted 9-5-1 to deny Senator Bato dela Rosa's request for a temporary restraining order against his International Criminal Court arrest warrant.
The decision clears a legal obstacle for the Marcos administration to arrest the former police chief.
The ruling came on a 9-5-1 vote by the Supreme Court. It addressed Dela Rosa's bid to block the ICC warrant.
Questions remain over whether President Marcos will order the arrest to proceed.