Ottawa police are asking for the public's help as they continue their investigation into a deadly collision that killed a female cyclist earlier this week.

Melanie Harris, 34, was struck and killed by an STO bus as she rode her bike northbound on Sussex Drive in a shared bus and bike lane just before 5 p.m. on Wednesday.

Police are still trying to piece together Harris' final moments. A preliminary investigation suggests Harris was heading northbound on a bike path when she crossed over a curb and entered the shared bus lane.

Police ask anyone who has information about the collision to contact investigators at 613-236-1222 ext. 2481 or Crime Stoppers at 613-233-TIPS.