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MANILA - The Philippine National Police said Tuesday it did not violate any law in inviting senatorial candidate Christopher Go to an event at its headquarters a day before the start of the campaign period for May's midterm polls.

Go, an erstwhile longtime aide of President Rodrigo Duterte, reportedly gave a speech, met with hundreds of college students and had a press conference inside Camp Crame in Quezon City on Monday.

Election fraud watchdog Kontra Daya said it found the timing of the event "suspicious."

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Go attended the event as an honorary member of the Association of the Chiefs of Police of the Philippines Inc. and not as a political candidate, said PNP chief Director General Oscar Albayalde.

Duterte's former aide did not urge event attendees to vote for him, the official told reporters.

"I think we have not violated any provision or instruction of the President," said Albayalde.

Duterte recently prohibited his Cabinet members from campaigning for any candidate.

"Wala kaming ini-endorse dito whatsoever," said the PNP chief.

(We are not endorsing anyone here whatsoever.)

Go last year came under fire when President Rodrigo Duterte and several Cabinet secretaries accompanied him in filing his certificate of candidacy for senator, which violated the poll body's 4-companion rule.

Another Duterte ally, former PNP chief Ronald Dela Rosa, is also running for senator.

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