SINGAPORE — The Malaysian police are probing two officers after two Singapore-registered car drivers alleged that they were subject to extortion at the Johor Bahru Sultan Iskandar checkpoint on Tuesday (March 12).

In a media statement on Thursday, the head of the Johor Bahru police said that the officers were being investigated after posts by two Facebook users over the incident.

In a post by the Facebook group MY SG Road Trip — Your Malaysia Road Trip Guide, user Irene Teo said that she was crossing from Johor Bahru to Singapore when a Malaysian policeman ushered her into a lane used by lorries.

She followed another Singapore-registered car “to a deserted side road beside the customs (checkpoint)”, where only two other cars could be seen, she added.

A police officer asked her why she had used the lane designated for lorries to return to Singapore, before asking for her driver's licence and passports of the car passengers.

Ms Teo alleged that the officer said that he would “help” them get back to the correct car lane leading to the immigration checkpoint in return for RM600 (S$171).

The officer claimed that the amount was a fine for driving in an unauthorised car lane.

Ms Teo also said the officer told her that if she failed to pay up, she would have to make a report and pay the fine at the immigration office where their personal particulars would be logged into the system.

She wrote that she insisted on going to the office to pay the fine, but the officer “simply ignored (her)”, adding that he was still holding on to one of the passengers' passports.

Eventually, however, Ms Teo agreed to pay him RM500 before the officer led the vehicle back to the correct car lane. Ms Teo did not give her nationality but she is reportedly Singaporean.

In a separate post on the same page, another user named "Sage" uploaded two in-vehicle footage videos of the incident, claiming to have been in the car in front of Ms Teo’s.

Sage, a woman who said that she is Malaysian, alleged that she had a similar experience.

In one video, a police officer can be seen shining a torchlight at Sage’s car and directing it toward the lorry lane.

The next clip then showed two police officers speaking to the driver in the car in front of them before asking for the passengers’ documents.

Sage said that after a “long argument”, she managed to pay RM100 in order to get her boyfriend's licence back from the police, who had taken possession of it.

No recordings of the extortion were seen in the video.

TODAY has reached out to both the Facebook users for more information.

In the Malaysian police's media statement, they said that Ms Teo was believed to have been instructed to pay S$142 to the two police officers “in order to avoid summons” for entering the truck checkpoint area.

The statement added that the police have not received any report from the alleged victims so far.

It added that an official request has been made to the Singapore consulate office in Johor Bahru for help in tracking down the two drivers to assist with investigations.

TODAY has reached out to the Malaysian police for more information.