Action will be taken against those responsible, he told reporters after opening the 81st annual general meeting of Koperasi Polis Diraja Malaysia Berhad here.

He also said police would ask the Election Commission monitoring team to look into the matter.

The billboards were put up yesterday, and a news portal had reported quoting Selangor DAP Chairman Tony Pua as having admitted that the party had put up the billboards.

They have since been removed by Election Commission workers.

On another matter, Khalid said an investigation was ongoing into the death of Syed Alman Zain Syed Alwi, son-in-law of Deputy Prime Minister Dr Ahmad Zahid Hamidi.

Syed Alman Zain, 44, the husband of Zahid’s eldest daughter, Nurulhidayah, 37, lost consciousness while under treatment at a dental clinic in Bangsar on June 1 and was rushed to the University Malaya Medical Centre where he was pronounced dead.

Khalid said police were awaiting a complete report from specialists.

– BERNAMA