SINGAPORE - The police are investigating an incident which saw a car appear to deliberately knock down a motorcyclist along the Ayer Rajah Expressway (AYE) on Wednesday (June 15) morning.

A video of the incident, first uploaded on Facebook by user Zufar Khan Ismail Khan on Thursday (June 16) afternoon, has since racked up more than 130,000 views and close to 6,000 shares.

It showed a Toyota Camry applying its brakes continuously and switching between two lanes in an erratic manner near the expressway's Clementi Road exit (in the direction of the city).

The Camry is then seen slamming into the side of a motorcycle that had pulled up alongside it - with the impact knocking both the motorcyclist and his pillion rider to the ground - before speeding away.

The video was also shared on the Facebook pages of road community sites Roads.sg and Beh Chia Lor, with netizens criticising the actions of the driver.

In response to media queries, the police confirmed that investigations into the incident were ongoing.

The pillion rider, Ms Siti Farina, told The Straits Times that the Camry's driver - a man who appeared to be in his 40s - had started behaving aggressively towards them without apparent reason at Jurong Town Hall Road.

"He was driving really dangerously and kept trying to swerve into us," said the 27-year-old dental assistant, who added that the accident occurred at around 11.30am.

Ms Siti's right hand was injured while her friend, 29-year-old dispatch rider Muhammad Fazly, hurt his right leg.

Both went to the nearby National University Hospital to seek treatment on their own before making a police report on the same day.

The police have advised anyone who uploaded videos of the incident to make a police report at any Neighbourhood Police Centre or Police Post, or online at http://www.police.gov.sg/epc/index.html.

"Any other persons with additional information regarding this incident can also provide them to the Traffic Police via SPF_Feedback_TP@spf.gov.sg," it added.

This is not the first time the same car has been spotted in a controversial road incident.

Footage posted online - in November 2014 and April 2015 - showed two separate instances where a Toyota Camry, bearing the same licence plate number as the one in the AYE incident, was seen changing lanes recklessly on an expressway.