A 79-year-old cyclist remains in hospital in serious condition after he was struck by a garbage truck on Tuesday morning in Kanata.

The collision happened near Kanata Avenue and Knudson Drive just after 7:15 a.m., Ottawa paramedics said.

The cyclist suffered head and extremity injuries.

He was taken to The Ottawa Hospital's Civic campus trauma unit in critical condition. Ottawa Police say his condition has since been upgraded to serious but stable condition.

Police are investigating and are looking for witnesses, including witnesses who may have already spoken to first responders at the scene.