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Senator Panfilo Lacson on Thursday presented CCTV footage showing suspected police officers planting drugs during a raid at an office building.

The videos taken last October 26, 2016 showed policemen rushing into an office and instructing employees to transfer to a separate room.

The police officers then started rummaging through the desks of the employees. One police officer could be seen taking something from his bag and placing it on the desks.

The footage was shown during a Senate hearing on alleged "tokhang for ransom" activities of police.

Lacson, a former Philippine National Police chief, said the alleged planting of drugs is not an isolated incident and called on the PNP to strengthen its counter-intelligence activities.

Watch a live streaming of the hearing here.