At a press conference, Shazeli said investigations would be held regardless, but a formal report would help if further action is needed.

“Investigations into that aspect are being conducted. However, we ask for a police report to be made so that it becomes an official report. This will help us if further action needs to be taken.

“We will carry out investigations based on whatever information we receive,” he said.

The threats came a day after Rafizi’s 12-year-old son was stabbed with a syringe at a shopping mall in Putrajaya yesterday afternoon.

CCTV footage showed two assailants, dressed in black with helmets covering their faces, following Rafizi’s wife’s car on a motorcycle before the incident.

Shazeli said six witnesses had given their statements over the attack so far, including the Pandan MP and his wife.

Earlier today, Rafizi revealed that his wife had received two threatening text messages from an unknown number, at 1.12am and another at 11.02am, both reading: “Be quiet. If you continue, AIDS,” with the second message followed by three syringe emojis.

Rafizi said he suspected that the attack was linked to a case he was looking into, saying he had met with a group of whistleblowers just last week.

When asked whether police have determined the substance in the syringe, Shazeli said: “We don’t know yet. The hospital has taken samples and is arranging for them to be analysed.”

On whether the motive was political or personal, he said it had not been determined.

“The investigation is still at an early stage, so give us the space and a chance to carry out a more detailed probe. We do not want to jump to conclusions too soon.”