A Vancouver police officer accused of assaulting a cyclist during an arrest that was videotaped and posted on Facebook, pleaded not guilty in court today.

The incident happened in March 2013 in downtown Vancouver, while Const. Ismail Bhabha was handcuffing cyclist Andishae​ Akhavan Kharazi after pulling him over for riding without a helmet and running a red light.

The incident provoked outrage online when a video taken by Kharazi's friend, Mike Schwarz, was posted on Facebook. It appears to show Bhabha punching Kharazi in the face.

At Bhabha's trial on Wednesday morning, Kharazi testified he did not recall running any lights on his bike and said he normally stops for lights.

He also testified he never resisted arrest or raised his voice, and only moved his arms involuntarily when the officer twisted his arms behind his back while attempting to handcuff him.

Police have said the video captured only part of the incident and that Kharazi was "allegedly confrontational with police," and "escalated the situation."

West Vancouver Police conducted an independent investigation and in September recommended Bhabha be charged with assault.

The trial is expected to last three days.