The lorry driver and cyclist who were involved in an altercation in Pasir Ris on Saturday have been arrested in relation to the case.
The Straits Times understands that the lorry driver, 57, was arrested for rash driving.
The cyclist, 35, was arrested for rash riding and mischief.
Meanwhile, a second video showing the aftermath of the altercation has gone viral after it emerged on social media yesterday morning.
Shared on the Roads.sg Facebook page, it had about 281,000 views and 5,500 shares as of 4.30pm. It was posted at around 10.20am.
The video shows a confrontation between three men - the two cyclists and the lorry driver - on a grass patch, presumably near where the original incident occurred.
The lorry driver can be seen holding his mobile phone and appears to be filming or taking photos of the two cyclists.
One of the cyclists snatches the phone away, before gesturing repeatedly at the driver.
The phone is eventually returned to the driver.
The cyclist who took the phone away is believed to be the one who hit and dislodged the side mirror of the lorry and was subsequently knocked over by the heavy vehicle on Saturday.
The Straits Times reported earlier that the police were alerted to the accident, which took place at the junction of Pasir Ris Drive 3 and Pasir Ris Rise.
The earlier video, also posted on Roads.sg, has chalked up 2.1 million views since it was uploaded on the day of the incident.
The original video showed one of the cyclists riding in the middle of the lane in front of the lorry, leading the lorry driver to honk twice.
The cyclist stopped at the traffic junction in front of the lorry and continued to obstruct the vehicle even as it moved away from the junction. He later moved to the left of the lane but hit the side mirror of the lorry as he was doing so.
The lorry driver then swerved towards the cyclist, knocking him off the road and onto the grass patch next to the road.
The lorry driver, named as Mr Zhang Shengzhong, 57, by Lianhe Wanbao yesterday, told the daily he was trying to overtake the cyclists.
He claimed that he swerved left as he heard a sound and thought he might have hit a taxi to his right. He added that he had no idea that videos of the incident had been taken, or that they had gone viral.
"I had gone out to get a new side mirror installed for $15. When I got home, I mentioned the incident only to my wife. I did not know it would attract such debate," the driver told Wanbao on Sunday.