Police are looking for the driver of a transport truck after a cyclist was hit on Highbury Ave. near Brydges St.
Investigators say the woman, in her 40s, is in critical condition after being rushed to hospital with serious injuries just after 1pm Wednesday afternoon.
Witnesses describe the suspect vehicle as an 18-wheel grain hauler.
Police say they are unsure whether this is a hit and run of if the driver was even aware the cyclist was hit.
Anyone with information is asked to contact London Police.