New Delhi, May 15 -- A Philippine senator wanted by the International Criminal Court for an alleged crime against humanity has fled from the Senate, where he sought refuge to evade arrest, officials said Thursday.

Sen. Ronald dela Rosa 's exit from the heavily guarded Senate came after volleys of gunshots were fired Wednesday night by the building's security personnel during an argument with government agents positioned in an adjacent building, sparking chaos that apparently helped the senator to slip out.

President Ferdinand Marcos Jr. made a late-night TV statement to ask the public to remain calm. A police investigation was underway, including into suspicions that the incident was instigated to provide dela Rosa a cover to escape.

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